LCCNs: (050 Library of Congress Call Number - Input Conventions)
When
the call number field consists only of a class number (letters followed
by numbers, possibly including a period and also a space), no subfield
$b is used.
Examples:
050 00 $aQA37
050 00 $aE525.5 123d
The
general rule is that the item number part of the call number begins at
the last capital letter in the call number or the period, if present,
preceding it.
Example:
050 00 $aHF5549.5.R44$bM35
Exceptions to the general rule for item numbers:
If
the call number is followed by only a date, with no Cutter number, the
date is contained in subfield $b.
Example:
050 00 $aE457.92$b 1967
If
the call number is followed by volume numbering that includes uppercase
letters, these letters are ignored in locating the last capital letter.
Examples:
050 00 $aJX1977$b.A2 St/ESA/35
050 00 $aHA1501$bA, Nr. 615
050 00 $aHD28$b.Y555 vol. 55 Suppl.
If
the call number begins with CS71, subfield $b
contains the date.
Example:
050 00 $aCS71.C323$b 1977
If
the call number is for a classification schedule (i.e., it is a call number
beginning with Z696.U5), the class letter(s) for the particular classification
and any following digit(s) are recorded in subfield $a
(as part of the classification). Subfield $b
contains the date.
Examples:
050 00 $aZ696.U5E3$b 1958
050 00 $aZ696.U5H-HJ$b 1981
The
abbreviations subser. and Suppl. are recorded in subfield
$b, even when there is no item
number.
To return, select: