LIBRARY OF CONGRESS CYAC SUBJECT HEADINGS
APPROVED MONTHLY LIST 12 CYAC (December 21, 2021)

Select this link to view the Summary of Decisions of the weekly editorial meeting.
 
 
GENRE/FORM TERMS
 
 
CHILDREN'S SUBJECT HEADINGS
 
150
Amphibians    [May Subd Geog] CHANGE GEOG    [sp2021051058]
 
450
UF Batrachia DELETE FIELD
 
550
RT Herpetology DELETE FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Animals    [May Subd Geog] ADD GEOG    [sp 96004766 ]
 
360
SA see also individual animals and groups of animals ADD FIELD
 
450
UF Animal kingdom ADD FIELD
 
450
UF Animalia ADD FIELD
 
450
UF Beasts ADD FIELD
 
450
UF Fauna ADD FIELD
 
450
UF Native animals ADD FIELD
 
450
UF Native fauna ADD FIELD
 
450
UF Wild animals ADD FIELD
 
450
UF Wildlife ADD FIELD
 
550
BT Organisms ADD FIELD
 
550
RT Human-animal relationships ADD FIELD
 
550
RT Zoology ADD FIELD
 
 
150
Annelids    [May Subd Geog] ADD GEOG    [sp 96004800 ]
 
450
UF Annelid worms ADD FIELD
 
450
UF Segmented worms ADD FIELD
 
550
BT Worms ADD FIELD
 
 
150
Aquatic animals    [May Subd Geog] CHANGE GEOG    [sp2021050985]
 
450
UF Aquatic fauna DELETE FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Aquatic insects    [May Subd Geog] CHANGE GEOG    [sp2021056942]
 
450
UF Insects, Aquatic [Former heading] DELETE FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Aquatic invertebrates    [May Subd Geog] CHANGE GEOG    [sp2021056314]
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Aquatic organisms    [May Subd Geog] CHANGE GEOG    [sp2021060791]
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Arachnids    [May Subd Geog] ADD GEOG    [sp 96004816 ]
 
053
QL451-QL459.2 (Zoology) ADD FIELD
 
550
BT Arthropods ADD FIELD
 
 
150
Arthropods    [May Subd Geog] ADD GEOG    [sp 96004824 ]
 
053
QL434-QL599.82 (Zoology) ADD FIELD
 
550
BT Invertebrates ADD FIELD
 
 
150
Bathrooms    [May Subd Geog] CHANGE GEOG    [sp2021053407]
 
667
Machine-derived authority record. DELETE FIELD
 
681
Notes under Public toilets; Restrooms DELETE FIELD
 
681
Note under Public toilets; Restrooms ADD FIELD
 
 
150
Bicycle motocross    [May Subd Geog] CHANGE GEOG    [sp2021050475]
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Birds    [May Subd Geog] ADD GEOG    [sp 96004914 ]
 
053
QL671-QL699 (Zoology) ADD FIELD
 
450
UF Aves ADD FIELD
 
450
UF Avian fauna ADD FIELD
 
450
UF Avifauna ADD FIELD
 
550
BT Vertebrates ADD FIELD
 
550
RT Ornithology ADD FIELD
 
 
150
Bony fishes    [May Subd Geog]    [sp2021061719]
 
053
QL637.9-QL638 (Zoology)
 
450
UF Gnathostomata
 
450
UF Osteichthyes
 
550
BT Fishes
 
 
150
Capitals (Cities)    [May Subd Geog] CHANGE GEOG    [sp2021054569]
 
360
SA subdivision Capital and capitol under names of countries, states, etc. DELETE FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
680
This heading may be subdivided by place for works treating collectively the capital cities of the component parts of a region or country. Works on the capital city of an individual jurisdiction are entered under the name of the jurisdiction with subdivision Capital and capitol. DELETE FIELD
 
680
When subdivided by place, the name of the place may indicate that the work either treats the capital cities of the component parts of a region or country collectively, or that it treats the capital city of a jurisdiction. For works treating individual capital cities of jurisdictions, two headings are assigned: 1. Capitals (Cities)--[jurisdiction]. 2. [Name of city]. ADD FIELD
 
 
150
Capitols    [May Subd Geog] CHANGE GEOG    [sp2021054570]
 
360
SA subdivision Capital and capitol under names of countries, states, etc. DELETE FIELD
 
550
BT Capitals (Cities) DELETE FIELD
 
550
BT Public buildings DELETE FIELD
 
550
BT Buildings ADD FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Cartilaginous fishes    [May Subd Geog] ADD GEOG    [sp 96004987 ]
 
450
UF Chondrichthians ADD FIELD
 
450
UF Chondrichthyan fishes ADD FIELD
 
450
UF Chondrichthyans ADD FIELD
 
450
UF Elasmobranch fishes ADD FIELD
 
450
UF Elasmobranchi ADD FIELD
 
450
UF Elasmobranchii ADD FIELD
 
450
UF Elasmobranchs ADD FIELD
 
450
UF Holocephali ADD FIELD
 
450
UF Plagiostomi ADD FIELD
 
450
UF Selachian fishes ADD FIELD
 
450
UF Selachians ADD FIELD
 
450
UF Selachii ADD FIELD
 
 
150
Cephalopods    [May Subd Geog] ADD GEOG    [sp 96005006 ]
 
053
QL430.2-QL430.3 ADD FIELD
 
550
BT Mollusks ADD FIELD
 
 
150
Choppers (Motorcycles)    [May Subd Geog] CHANGE GEOG    [sp2021060727]
 
550
RT Bobbers (Motorcycles) DELETE FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Chordates    [May Subd Geog] ADD GEOG    [sp 96005056 ]
 
053
QL605-QL739.8 (Zoology) ADD FIELD
 
450
UF Chordate animals ADD FIELD
 
550
BT Metazoans ADD FIELD
 
 
150
Christianity    [May Subd Geog] ADD GEOG    [sp 96005059 ]
 
053
BR1-BR129.5 ADD FIELD
 
550
BT Religions ADD FIELD
 
680
Here are entered works on the Christian religion including its origin, beliefs, practices and influence treated collectively. ADD FIELD
 
 
150
Christianity--History    [sp 96005060 ]
 
 
150
Ciliates    [May Subd Geog] ADD GEOG    [sp 96005068 ]
 
053
QL368.A22 ADD FIELD
 
450
UF Ciliophora ADD FIELD
 
450
UF Ciliophorans ADD FIELD
 
550
BT Protozoans ADD FIELD
 
 
150
Classrooms    [May Subd Geog] CHANGE GEOG    [sp2021061103]
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Cnidaria CANCEL HEADING    [sp2021051363]
 
682
This authority record has been deleted because the heading is covered by the subject heading Cnidarians (DLC)sj2021061730
 
 
150
Cnidarians    [May Subd Geog]    [sp2021061730]
 
053
QL375-QL379 (Zoology)
 
450
UF Cnidaria [Former heading]
 
450
UF Coelenterates [Former heading]
 
450
UF Coelenterata
 
450
UF Radiata
 
550
BT Invertebrates
 
 
150
Coelenterates CANCEL HEADING    [sp 96005135 ]
 
682
This authority record has been deleted because the heading is covered by the subject heading Cnidarians (DLC)sj2021061730
 
 
150
Crustaceans    [May Subd Geog] ADD GEOG    [sp 96005281 ]
 
550
BT Arthropods ADD FIELD
 
550
BT Shellfishes ADD FIELD
 
 
150
Echinoderms    [May Subd Geog] ADD GEOG    [sp 96005404 ]
 
450
UF Eleutherozoa ADD FIELD
 
450
UF Pelmatoza ADD FIELD
 
450
UF Spiny-skinned animals ADD FIELD
 
550
BT Marine invertebrates ADD FIELD
 
 
150
Extraterrestrial beings    [May Subd Geog] ADD GEOG    [sp 96005436 ]
 
450
UF Alien beings DELETE FIELD
 
450
UF Alien beings (Extraterrestrials) ADD FIELD
 
450
UF Aliens (Extraterrestrial beings) ADD FIELD
 
450
UF Extraterrestrial intelligence ADD FIELD
 
450
UF Extraterrestrials ADD FIELD
 
550
BT Life on other planets ADD FIELD
 
550
RT Human-alien encounters ADD FIELD
 
680
Here are entered works in which the alien travels to earth and makes contact with human or animal inhabitants. Works in which the human-alien contact is made in the alien's home world or elsewhere in outer space are entered under the heading Extraterrestrial beings. ADD FIELD
 
681
Note under Human-alien encounters ADD FIELD
 
 
150
Four-wheel drive vehicles    [May Subd Geog] CHANGE GEOG    [sp2021059422]
 
450
UF Automobiles--Four-wheel drive [Former heading] DELETE FIELD
 
450
UF AWD vehicles ADD FIELD
 
550
RT Off-road vehicles DELETE FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Freshwater animals    [May Subd Geog] CHANGE GEOG    [sp2021050255]
 
450
UF Fresh-water fauna [Former heading] DELETE FIELD
 
450
UF Freshwater fauna [Former heading] DELETE FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Freshwater organisms    [May Subd Geog] CHANGE GEOG    [sp2021059197]
 
053
QH101-QH198 (Local, by geographic region) DELETE FIELD
 
053
QH101-QH199.5 (Local, by geographic region) ADD FIELD
 
450
UF Fresh-water organisms ADD FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Harley-Davidson motorcycle    [Not Subd Geog]    [sp2021053755]
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Human-alien encounters    [May Subd Geog] CHANGE GEOG    [sp2021052665]
 
550
BT Unidentified flying objects--Sightings and encounters DELETE FIELD
 
550
RT Extraterrestrial beings DELETE FIELD
 
550
BT Extraterrestrial beings ADD FIELD
 
550
RT Unidentified flying objects--Sightings and encounters ADD FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
680
Here are entered works in which the human-alien contact is made in the alien's home world or elsewhere in outer space. Works in which the alien travels to earth and makes contact with human or animal inhabitants are entered under the heading Extraterrestrial beings. ADD FIELD
 
681
Note under Extraterrestrial beings ADD FIELD
 
 
150
Insects    [May Subd Geog] CHANGE GEOG    [sp2021050134]
 
450
UF Pterygota DELETE FIELD
 
550
BT Arthropoda DELETE FIELD
 
550
RT Entomology DELETE FIELD
 
550
BT Arthropods ADD FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Invertebrates    [May Subd Geog] CHANGE GEOG    [sp2021051378]
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Life (Biology)    [May Subd Geog] CHANGE GEOG    [sp2021051480]
 
053
QH501-QH531 DELETE FIELD
 
053
QP81 (Animal physiology) DELETE FIELD
 
053
QH501-QH531 (General) ADD FIELD
 
053
QP81-QP82.2 (Animal physiology) ADD FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Mammals    [May Subd Geog] CHANGE GEOG    [sp2021050126]
 
450
UF Theria [Former heading] DELETE FIELD
 
450
UF Theria ADD FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Marine animals    [May Subd Geog] CHANGE GEOG    [sp2021050172]
 
450
UF Marine fauna [Former heading] DELETE FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Marine invertebrates    [May Subd Geog] CHANGE GEOG    [sp2021059409]
 
053
QL365.4-QL365.6 (Local) DELETE FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Marine mammals    [May Subd Geog] CHANGE GEOG    [sp2021050185]
 
053
QL713.2 (General) DELETE FIELD
 
053
QL713.25-QL713.35 (By body of water) DELETE FIELD
 
053
QL715-QL736.5 (By region or country) DELETE FIELD
 
053
QL713.2-QL713.35 (General) ADD FIELD
 
550
BT Aquatic mammals DELETE FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Marine organisms    [May Subd Geog] CHANGE GEOG    [sp2021060221]
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Metazoans    [May Subd Geog] ADD GEOG    [sp 96005952 ]
 
450
UF Multicellular animals ADD FIELD
 
550
BT Animals ADD FIELD
 
 
150
Mollusks    [May Subd Geog] CHANGE GEOG    [sp2021054116]
 
053
SB998.M64 (Pests) DELETE FIELD
 
053
SB998.M64 (Plant culture) ADD FIELD
 
450
UF Conchology DELETE FIELD
 
450
UF Malacology DELETE FIELD
 
550
BT Bilateria DELETE FIELD
 
550
BT Invertebrates DELETE FIELD
 
550
BT Shellfish DELETE FIELD
 
550
BT Shellfishes ADD FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
681
Note under Shells DELETE FIELD
 
 
150
Motor scooters    [May Subd Geog] CHANGE GEOG    [sp2021056849]
 
053
TL450 DELETE FIELD
 
053
TL450-TL453 ADD FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Motorcycles--Customizing    [May Subd Geog]    [sp2021061728]
 
550
RT Choppers (Motorcycles)
 
 
150
Motorcycles, Racing CHANGE HEADING
 
150
Racing motorcycles    [May Subd Geog] CHANGE GEOG    [sp2021058721]
 
053
TL442-TL442.5
 
450
UF Motorcycles, Racing [Former heading]
 
550
BT Motorcycles
 
 
150
Multiple birth    [May Subd Geog] CHANGE GEOG    [sp2021055358]
 
450
UF Birth, Multiple [Former heading] DELETE FIELD
 
450
UF Birth, Multiple ADD FIELD
 
450
UF Birth, Plural ADD FIELD
 
550
RT Multiple pregnancy DELETE FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
680
Here are entered nonfiction works about multiple birth. Fictional works about multiple birth are entered under the specific type of birth, e.g., Twins--Fiction. ADD FIELD
 
 
150
Multiple pregnancy    [May Subd Geog] CHANGE GEOG    [sp2021060105]
 
450
UF Pregnancy, Multiple [Former heading] DELETE FIELD
 
550
RT Multiple birth DELETE FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Myriapods    [May Subd Geog] ADD GEOG    [sp2002003658]
 
550
BT Arthropods ADD FIELD
 
 
150
Off-road vehicles    [May Subd Geog] CHANGE GEOG    [sp2021050386]
 
550
RT Four-wheel drive vehicles DELETE FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Organisms    [May Subd Geog] CHANGE GEOG    [sp2021051519]
 
550
RT Species DELETE FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Protists    [May Subd Geog] ADD GEOG    [sp 96006335 ]
 
550
BT Microorganisms ADD FIELD
 
680
Here are entered works on unicellular organisms having true nuclei (eukaryotes). ADD FIELD
 
 
150
Protozoans    [May Subd Geog] ADD GEOG    [sp 96006336 ]
 
053
QL366-QL369.2 (Zoology) ADD FIELD
 
550
BT Invertebrates ADD FIELD
 
550
BT Protists ADD FIELD
 
 
150
Public toilets    [May Subd Geog]    [sp2021061667]
 
053
RA607 (Hygiene)
 
053
TH6515.P9 (Plumbing)
 
450
UF Comfort stations, Public
 
450
UF Conveniences, Public (Public toilets)
 
450
UF Facilities, Toilet
 
450
UF Johns (Toilet facilities)
 
450
UF Lavatories (Toilet facilities)
 
450
UF Loos (Toilet facilities)
 
450
UF Public comfort stations
 
450
UF Public conveniences (Public toilets)
 
450
UF Toilet facilities
 
550
BT Buildings
 
550
RT Toilets
 
680
Here are entered works on freestanding buildings or stalls designed to provide toilets and washbasins for use by the general public. Works on rooms in office buildings, stores, restaurants, etc., equipped with toilets and washbasins for use by employees, customers, or visitors, are entered under Restrooms. Works on rooms in residential settings equipped with a bathtub or shower, and usually also a toilet and washbasin, are entered under Bathrooms.
 
681
Note under Bathrooms; Restrooms
 
 
150
Reptiles    [May Subd Geog] CHANGE GEOG    [sp2021051706]
 
450
UF Sauria [Former heading] DELETE FIELD
 
550
BT Amniotes DELETE FIELD
 
550
RT Herpetology DELETE FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Restrooms    [May Subd Geog] CHANGE GEOG    [sp2021059360]
 
667
Machine-derived authority record. DELETE FIELD
 
681
Notes under Bathrooms; Public toilets DELETE FIELD
 
681
Note under Bathrooms; Public toilets ADD FIELD
 
 
150
Rodents    [May Subd Geog] CHANGE GEOG    [sp2021054753]
 
450
UF Rodentia [Former heading] DELETE FIELD
 
450
UF Rodentia ADD FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
School facilities    [May Subd Geog]    [sp2021061668]
 
053
LB3201-LB3325
 
450
UF Educational facilities
 
450
UF Facilities, Educational
 
450
UF Facilities, School
 
450
UF Plants, School (School facilities)
 
450
UF Public school facilities
 
450
UF School plants (School facilities)
 
550
RT Education
 
 
150
Scooters    [May Subd Geog] CHANGE GEOG    [sp2021055645]
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Shellfish CHANGE HEADING
 
150
Shellfishes    [May Subd Geog] CHANGE GEOG    [sp2021060074]
 
053
RA602.S6 (Public health)
 
450
UF Shell-fish
 
450
UF Shellfish [Former heading]
 
550
BT Aquatic invertebrates
 
 
150
Sponges    [May Subd Geog] CHANGE GEOG    [sp2021052802]
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Starfishes    [May Subd Geog] CHANGE GEOG    [sp2021052492]
 
450
UF Asteroids (Echinodermata) DELETE FIELD
 
450
UF Asteroids (Echinoderms) ADD FIELD
 
550
BT Echinodermata DELETE FIELD
 
550
BT Echinoderms ADD FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Superbikes    [May Subd Geog] CHANGE GEOG    [sp2021053494]
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Swordfishes    [May Subd Geog]    [sp2021061718]
(A)
053
QL638.X5
 
450
UF Swordfish
 
450
UF Xiphiidae
 
550
BT Bony fishes
 
 
150
Theology    [May Subd Geog] CHANGE GEOG    [sp2021054875]
 
053
BR-BX DELETE FIELD
 
360
SA subdivision Theology under individual monastic and religious orders and under uniform titles of sacred works, e.g. Jesuits--Theology; Bible--Theology DELETE FIELD
 
450
UF Theology--19th century [Former heading] DELETE FIELD
 
450
UF Theology--20th century [Former heading] DELETE FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Trail bikes    [May Subd Geog] CHANGE GEOG    [sp2021053493]
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Unidentified flying objects--Sightings and encounters    [May Subd Geog]    [sp2021061715]
 
053
TL789.3
 
450
UF Close encounters of the first kind
 
450
UF Close encounters of the second kind
 
450
UF Encounters with unidentified flying objects
 
450
UF Sightings of unidentified flying objects
 
450
UF UFO encounter phenomena
 
450
UF UFO encounters
 
450
UF UFO sightings
 
550
RT Human-alien encounters
 
 
150
Vertebrates    [May Subd Geog] CHANGE GEOG    [sp2021052120]
 
450
UF Craniata ADD FIELD
 
450
UF Craniates ADD FIELD
 
550
BT Chordata DELETE FIELD
 
550
BT Chordates ADD FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
150
Worms    [May Subd Geog] CHANGE GEOG    [sp2021052396]
 
550
BT Bilateria DELETE FIELD
 
667
Machine-derived authority record. DELETE FIELD
 
 
 
MEDIUM OF PERFORMANCE TERMS
 
 
DEMOGRAPHIC GROUP TERMS