[Classweb-users] FW: PT5183

[Duijn, Aad van]

Dear colleagues,

PT5183 is apparently a valid class number:

PT5180-5185 Dutch literature<javascript:parent.GoTo('up',%20'&span=PT5180-5185&max=0&key=_00PT5180_00PT5185_009_00',%20null)>-Literary history and criticism<javascript:parent.GoTo('up',%20'&span=PT5180-5185&max=1&key=_00PT5180_00PT5185_009_00',%20null)>-History of Dutch literature<javascript:parent.GoTo('up',%20'&span=PT5180-5185&max=2&key=_00PT5180_00PT5185_009_00',%20null)>-Special periods<javascript:parent.GoTo('up',%20'&span=PT5180-5185&max=3&key=_00PT5180_00PT5185_009_00',%20null)>-20th century<javascript:parent.GoTo('down',%20'&span=PT5180-5185&key=_00PT5180_00PT5185_009_00',%20null)>
But when you click on 20th century<javascript:parent.GoTo('down',%20'&span=PT5180-5185&key=_00PT5180_00PT5185_009_00',%20null)>
You will see only:
PT5180 General works
PT5185.A-Z Special topics, A-Z<javascript:parent.GoTo('down',%20'&span=PT5180-5185&key=_00PT5185_2EA_00PT5185_2EZ_009_00',%20null)>

A similar thing happens at PT5190-5195 Dutch literature<javascript:parent.GoTo('up',%20'&span=PT5190-5195&max=0&key=_00PT5190_00PT5195_009_00',%20null)>-Literary history and criticism<javascript:parent.GoTo('up',%20'&span=PT5190-5195&max=1&key=_00PT5190_00PT5195_009_00',%20null)>-History of Dutch literature<javascript:parent.GoTo('up',%20'&span=PT5190-5195&max=2&key=_00PT5190_00PT5195_009_00',%20null)>-Special periods<javascript:parent.GoTo('up',%20'&span=PT5190-5195&max=3&key=_00PT5190_00PT5195_009_00',%20null)>-21st century<javascript:parent.GoTo('down',%20'&span=PT5190-5195&key=_00PT5190_00PT5195_009_00',%20null)>

The thing is that we discovered that in WorldCat and in the LC-catalog quite a few bibrecords have been provided with PT5183 (and have been downloaded to our local ILS).

Via Correlations Search (LCC => LCSH) you will see this:

PT5183<javascript:Browser('&table=schedules&span=PT5183')>
         Dutch literature--20th century--History and criticism<javascript:LCSH('Dutch%20literature--20th%20century--History%20and%20criticism')> [Topical] (43)
         Dutch literature--20th century<javascript:LCSH('Dutch%20literature--20th%20century')> [Topical] (8)
         Authors, Dutch--20th century--Interviews<javascript:LCSH('Authors,%20Dutch--20th%20century--Interviews')> [Topical] (4)
         Dutch literature--20th century--Bio-bibliography<javascript:LCSH('Dutch%20literature--20th%20century--Bio-bibliography')> [Topical] (2)
         Authors, Dutch--20th century--Biography<javascript:LCSH('Authors,%20Dutch--20th%20century--Biography')> [Topical] (2)
         Dutch literature--History and criticism<javascript:LCSH('Dutch%20literature--History%20and%20criticism')> [Topical] (1)
         Authors, Dutch--20th century--Books and reading<javascript:LCSH('Authors,%20Dutch--20th%20century--Books%20and%20reading')> [Topical] (1)
         Dutch literature--20th century--Bibliography--Exhibitions<javascript:LCSH('Dutch%20literature--20th%20century--Bibliography--Exhibitions')> [Topical] (1)
         Dutch literature--20th century--History and criticism--Congresses<javascript:LCSH('Dutch%20literature--20th%20century--History%20and%20criticism--Congresses')> [Topical] (1)
         Authors, Dutch--20th century--Anecdotes<javascript:LCSH('Authors,%20Dutch--20th%20century--Anecdotes')> [Topical] (1)

So, by the look of it, a class number is used, although it does not exist.
Or are we mistaken somehow?

Aad van Duijn, Universiteitsbibliotheek Amsterdam