Policy on classification numbers in BIBCO records
Rev. Sept. 8, 1998; corrected Jan. 9, 2001
FAQ on LC Classification numbers in
BIBCO records
Class numbers in BIBCO records
The Standing Committee on Standards has received a number of questions
from BIBCO libraries about how to interpret the provisions of the PCC
Core Bibliographic Standards for Books with respect to class numbers.
The following guidelines are intended to clarify the provisions of both
the core and full record standards with respect to class numbers.
General provision
The books core record standard calls for assigning a class number from
an established classification system supported in the MARC 21 format.
The provision includes classification systems from any source (1) specifically
identified in the format (e.g., fields 050, 060, 070, 080, 082, 084,
086) or (2) included in the code list for relators, sources, description
conventions.[1] Purely local call numbers, accession numbers, shelf numbers,
etc. may be input in local call number fields.
Objective
The purpose of including class numbers in PCC records is to provide
classified access and to provide the basis for building a call number
through one of the classification systems supported by MARC 21. Any class
number provided should aim to be in a form that is most useful to the
widest number of potential users of that classification system.
Class number
Some classification systems distinguish between the general and the
particular. Data that relate to the general make it possible to group
items of similar intellectual content (class number). Data that relate
to the particular make it possible to individualize items and subarrange
them within a group (e.g., author Cutter, work Cutter, etc.). In applying
such systems to PCC records, only a class number is required. PCC libraries
always have the option of supplying a full call number, but it is not
a Program requirement.
What constitutes a class number is determined by the nature of the
classification system and the agency authorized to develop and maintain
it. For example, in the Library of Congress Classification system, class
numbers sometimes also include topical Cutter numbers.
Requirements
Individual core standards specify when a class number is required.
These requirements apply also at the full level. Optionally, a class
number or call number may be supplied in records for materials in which
the standard does not require such a number. If a library does not classify
materials for which a PCC standard requires a class number, the library
may either supply one in particular cases or not label the record a PCC
record.
General application
To the extent practicable, supply a class number according to the current
practice specified by the authoritative agency responsible for the development
and maintenance of the classification system. Apply this guideline also
in those cases in which a call number is optionally supplied. If a library
employs a variant practice in using a particular classification system,
such forms can be recorded in a local field in addition to the standard
form recorded in the field appropriate to the classification system.
A PCC library is only responsible for a classification number from the
primary scheme in use by the upgrading library. If a classification number
from another scheme appears in a record that a PCC institution upgrades
as a PCC record, retain that number.
For BIBCO libraries using LC classification, assign a class number
that adheres to LC practice and that includes the data that represent
the topic (what the work is about). Depending upon the particular situation
in the schedule, include data that would be in the $a subfield if that
work were given a complete call number (to the extent that they are available
in the classification schedule). Such data may include topical Cutters,
work Cutters, artist numbers, geographic Cutters. Input the number in
field 050 and use value "4" (Assigned by agency other than LC) in the
second indicator position.
If a BIBCO library employs variant practices in assigning non-standard
topical Cutter numbers or literary author Cutter numbers, etc., the local
number may be input in a local call number field in addition to the LC
conformant number in 050.
Dewey Decimal Classification
For BIBCO libraries using Dewey Decimal Classification, assign a class
number using the current, full edition of the DDC appropriate to the
specificity of the material in hand. Input the number in field 082 and
use value "4" (Assigned by agency other than LC) in the second indicator
position.
If a BIBCO library employs a variant, local number or a number suggested
as an option in the DDC, the local number may be input in a local call
number field.
Exceptions
If a PCC library using a PCC standard that calls for a classification
number catalogs a work on a topic that is not yet represented in the
classification system it uses, e.g., religious law in the case of the
Library of Congress Classification, the PCC library may nevertheless
designate the record a PCC record even though it necessarily lacks the
required classification number. Optionally, the library may input the
local number it uses in a local call number field.
Footnotes:
- MARC Code List for Relators, Sources, Description Conventions, 2000.
Return to top of page
|