082 Subfield $a - Classification number:

Subfield $a contains the classification number assigned using an edition of the Dewey Decimal Classification.  The source of the classification number is the Dewey Decimal Classification and Relative Index, the Abridged Dewey Decimal Classification and Relative Index, and electronic updates to either edition.  Through 1997, updates were issued in DC&:  Dewey Decimal Classification Additions, Notes and Decisions.

Examples:

082  00  $a355.02/17$222

082  00  $a343.7306/8$a347.30368$220

[The second number is optional.]

For DDC numbers for Canadian literature, an uppercase "C" is added as a prefix.  For works intended for a juvenile audience, a lowercase "j" is added as a prefix.  The "j" prefix is not added to DDC numbers in records for juvenile textbooks.

Examples:

082  0#  $aC848$220

082  0#  $aj574$220

082  0#  $ajC813$220