055 Call Numbers/Class Numbers Assigned in Canada (R) (Variable Data Field)
Field 055 contains either a complete call number or a classification number that is assigned by the National Library of Canada (NLC) or a library contributing to NLC, 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 Call 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 the National Library of Canada for Canadian history, literature, and law.
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 | Call Numbers/Class Numbers Assigned in Canada |
O |
O |
R |
| Indicator: | ||||
| First | Existence in NLC collection |
M |
||
| # | Information not provided |
A |
||
| 0 | Work held by NLC |
A |
||
| 1 | Work not held by NLC |
A |
||
| Second | Type, completeness, source of class/call number |
M |
||
| 0 | LC-based call number assigned by NLC |
A |
||
| 1 | Complete LC class number assigned by NLC |
A |
||
| 2 | Incomplete LC class number assigned by NLC |
A |
||
| 3 | LC-based call number assigned by the contributing library |
A |
||
| 4 | Complete LC class number assigned by the contributing library |
A |
||
| 5 | Incomplete LC class number assigned by the contributing library |
A |
||
| 6 | Other call number assigned by NLC |
A |
||
| 7 | Other class number assigned by NLC |
A |
||
| 8 | Other call number assigned by the contributing library |
A |
||
| 9 | Other class number assigned by the contributing library |
A |
||
| Subfield code: | ||||
| $a | Classification number |
M |
O |
NR |
| $b | Item number |
A |
O |
NR |
| $2 | Source of call/class number |
A |
O |
NR |
| $8 | Field link and sequence number |
O |
O |
R |
Related MARC fields or documents:
060 National Library of Medicine Call Number
080 Universal Decimal Classification Number
Library of Congress Classification
LC Classification--Additions and Changes
MARC Code List of Relators, Sources, Description Conventions
See also:
