055 Classification Numbers Assigned in Canada (R) (Variable Data Field)
Field 055 contains either a complete call number or a classification number that is assigned by Library and Archives Canada (LAC) or a library contributing to LAC, except for those numbers assigned from the National Library of Medicine classification system, the Universal Decimal Classification, and the Dewey Decimal Classification. These latter numbers are input in fields 060 (National Library of Medicine Call Number), 080 (Universal Decimal Classification Number), and 082 (Dewey Decimal Classification Number), respectively. Note that call numbers/class numbers to be recorded in field 055 include those assigned from the Library of Congress classification schedules, including those from schedules specially developed by Library and Archives Canada for Canadian history and literature.
The National level record requirement for this field is Optional.
Field 055 is repeatable.
Guidelines for applying content designators:
For indicator and subfield code definitions and examples, National-level (NLR) and Minimal-level (MLR) record requirements, and designator repeatability, see table below:
Position |
Description |
NLR |
MLR |
Repeatability |
Field 055 |
Classification Numbers Assigned in Canada |
O |
O |
R |
Indicator: |
|
|
|
|
First |
M |
|
|
|
A |
|
|
||
0 |
A |
|
|
|
1 |
A |
|
|
|
|
|
|
|
|
Second |
M |
|
|
|
0 |
A |
|
|
|
1 |
A |
|
|
|
2 |
A |
|
|
|
3 |
A |
|
|
|
4 |
Complete LC class number assigned by the contributing library |
A |
|
|
5 |
Incomplete LC class number assigned by the contributing library |
A |
|
|
6 |
A |
|
|
|
7 |
A |
|
|
|
8 |
A |
|
|
|
9 |
A |
|
|
|
|
|
|
|
|
Subfield code: |
|
|
|
|
$a |
M |
O |
NR |
|
$b |
A |
O |
NR |
|
$0 |
O |
O |
R |
|
$1 |
|
|
R |
|
$2 |
A |
O |
NR |
|
$6 |
A |
O |
NR |
|
$8 |
O |
O |
R |
Subfield $0 - Authority record control number or standard number [new, 2017]
Subfield $1 - Real World Object URI [new, 2017]
Related MARC fields or documents:
060 National Library of Medicine Call Number
080 Universal Decimal Classification Number
082 Dewey Decimal Classification Number
Library of Congress Classification
LC Classification--Additions and Changes
Source Codes for Vocabularies, Rules, and Schemes:
Classification Scheme Source Codes
See also: