Like other areas of the Library of Congress, the Dewey Program increasingly depends on copy cataloging work flows to supplement its production. Dewey Program classifiers aim to provide standard, complete Dewey numbers with segmentation marks; however, the Library of Congress also avails itself of Dewey numbers supplied by other institutions. This may result in Dewey numbers at variance with those that would be assigned under the Dewey Program’s policies and procedures. For example, copied records generally do not contain segmentation.
If a bibliographic record imported into the Library of Congress catalog via the copy cataloging work stream has a Dewey Decimal Classification number with a valid edition number in subfield 2, the Dewey number is copied into the MARC 082 field (Dewey Decimal Classification number) and the second indicator (Source of call number) is set to 4 (Assigned by agency other than LC). If the Dewey Program reviews the assigned Dewey classification, the second indicator in the 082 field is set to 0 (Assigned by LC), and the edition number in subfield 2 is verified. If the record is distributed without Dewey Program review, the second indicator remains at 4 (Assigned by agency other than LC), and the first indicator (Type of edition) is left at the value in the original record.
082 04 ‡a 355.033054 ‡2 23 [example of a record not reviewed by the Dewey Program]
082 00 ‡a 355.00952/03 ‡2 23 [example of a record reviewed by the Dewey Program]