Information:
The 082 tag of the MARC bibliographic format contains
a complete classification number assigned by the
Library of Congress or another cataloging agency.
Classification numbers are assigned from the Dewey
Decimal Classification (DDC) full or abridged editions.
Information about the editions can be found at:
http://www.oclc.org/dewey/
Vendors use the 082 tag to provide a suggested Dewey
Decimal Classification number in the MARC records they
provide. In addition some systems use the 082 tag to
generate the call number in the holdings information
for the item.
Classification numbers serve a dual function for the
library user. The classification number is a locator
that tells a library user where an individual item is
located in the library. Dewey Decimal Classification
numbers are also subject classifications that tell
library users where other items on the same or similar
subjects may be located.
The first indicator tells whether the classification
number comes from the Abridged or the Full edition of
the Dewey Decimal Classification schedules. The second
indicator tells whether the Dewey Classification
number was assigned by the Library of Congress or by
another library or vendor.
Subfield a contains the Dewey Decimal Classification
number. These are 3 digit numbers and can be followed
by a decimal point and other numbers. In long
classification numbers a slash (/) indicates where
the number may be shortened. When space s follows the
classification number this indicates that the number
was assigned to the series the item belongs to. This
may be followed by another subfield a with a Dewey
Classification number for the item. In addition to the
Dewey Decimal numbers [E], [Fic], B, and 92 are used
in this subfield.
Subfield b contains the item number. This may be a
Cutter Number assigned from one of the Cutter or
Cutter-Sanborn tables. Many libraries use the first three
letters of the main entry here. Volume and copy number
information may also be entered here.
Subfield 2 is used for the number of the edition of the
Dewey Decimal Classification. The unabridged Dewey
Decimal Classification is in its 23rd edition. The Abridged
Dewey Decimal Classification is now in its 15th edition.
Indicators
First Type of edition
0 Full edition
1 Abridged edition
7 Other edition specified in subfield 2
Second Source of classification number
blank No information provided
0 Assigned by LC
4 Assigned by agency other than LC
Subfields
a Classification number (R)
b Item number (NR)
2 Edition number (NR)
Punctuation
There is no mark of punctuation at the end of this
tag.
Examples:
082 14 _a973.7
_212
082 04 _a813/.54
_221
082 00 _a025.4/31
_220
082 00 _a[E]
_221
082 00 _a818/.5409
_aB
_223
082 04 _a[Fic]
_223
082 00 _a973.929/092
_aB
_a92
_221
082 00 _a659.1 s
_a659.1/57
_220
082 1 _a813
_bMEL
_215
082 0 _a813.3
_bM531m c.2
_222
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