055 Classification Numbers Assigned in Canada

Codes

First indicator - Existence in LAC collection

# Information not provided

0 Work held by LAC

1 Work not held by LAC

Second indicator - Type, completeness, source of class/call number

0 LC-based call number assigned by LAC

1 Complete LC class number assigned by LAC

2 Incomplete LC class number assigned by LAC

3 LC-based call number assigned by contributing library

4 Complete LC class number assigned by contributing library

5 Incomplete LC class number assigned by contributing library

6 Other call number assigned by LAC

7 Other class number assigned by LAC

8 Other call number assigned by contributing library

9 Other class number assigned by contributing library

Subfields:

a Classification number (NR)

b Item number (NR)

2 Source of call/class number (NR)

6 Linkage (NR)

8 Field link and sequence number (R)

NOTE: See MARC 21 Format for Bibliographic Data (055 Classification Numbers Assigned in Canada) for code definitions not given below.

Description/Instructions

Field 055 contains class/call numbers assigned by the Library and Archives Canada. LAC uses LC classification schedules with specially developed schedules for Canadian history, literature, and law.

LAC assigns incomplete class numbers in cases where the full class number would include a cutter number. Incomplete class numbers are followed by an asterisk.

055 01 BX743.25

055 01 AN

055 02 PS8235*

Subfields

$a Classification number.

Subfield $a contains a classification number. Alternate call numbers are recorded in separate 055 fields.

055 01 FC3099

055 01 HB31

055 00 HB31 $b S54 fol.

[multiple 055 fields; LC class number, and LAC call number]

$b Item number.

Subfield $b contains the item number.

055 00 F5050.2 $b T5

$2 Source of call/class number.

Subfield $2 contains a code that identifies the source list or scheme from which the call/class number was assigned. It is used only when the second indicator contains value "6," "7," "8," or "9." The codes to be used in the subfield are listed in Source Codes for Vocabularies, Rules, and Schemes (Classification Scheme Source Codes).

055 18 KF385 ZA2 $b .T34 1989 $2 kfmod

Related field, etc.

050

055 Classification Numbers Assigned in Canada (MARC 21 Format for Bibliographic Data)