Representation of DDC in MARC 21 Bibliographic Format

Representation of DDC in MARC 21 Bibliographic Format: An Update Dewey Breakfast/Update ALA Annual Meeting July 11, 2009

Outline: 082, 085, 083 • 082 field Dewey Decimal Classification Number (R): new subfields • 085 Synthesized Classification Number Components • 083 Additional Dewey Decimal Classification Number • Discussion: 083

MARC Bibliographic format: 082, 085, 083 MARC Proposal No. 2008 -01 Submitted jointly by the Dewey editorial team, Deutsche Nationalbibliothek (DNB), Library of Congress, and OCLC Added to MARC 21 in Update No. 9 (October 2008) OCLC will implement in World. Cat in August 2009 http: //www. loc. gov/marc/bibliographic/bd 082. html http: //www. loc. gov/marc/bibliographic/bd 085. html http: //www. loc. gov/marc/bibliographic/bd 083. html

082 field Dewey Decimal Classification Number (R): new subfields $m - Standard or optional designation (NR) a (standard) b (optional) $q - Assigning agency (NR) Used with second indicator 4 (Assigned by agency other than LC)

Example of 082 subfield $m 082 00 $a 843/. 914 $2 22 $m a 082 04 $a C 843/. 54 $2 20 $m b Poulin, Jacques, 1937 Le Vieux Chagrin: Roman LCSH: French-Canadian fiction— 20 th century

085 Synthesized Classification Number Components (1) To show a built Dewey number has been built and to specify the component elements Indicators: both undefined (##) Subfield Codes: $a - Number where instructions are found--single number or beginning number of span (R) $b - Base number (R) $c - Classification number--Ending number of span (R) $f - Facet designator (R)

085 Synthesized Classification Number Components (2) $r - Root number (R) $s - Digits added from classification number in schedule or external table (R) $t - Digits added from internal subarrangement or add table (R) $u - Number being analyzed (R) $v - Number in internal subarrangement or add table where instructions are found (R)

085 Synthesized Classification Number Components (3) $w - Table identification--internal subarrangement or add table (R) $y - Table number--internal subarrangement or add table (R) $z - Table identification (R) $6 - Linkage (NR) $8 - Field link and sequence number (R)

Example of 085 field (1) 082 04 $8 1 $a 025. 069291 $2 22 085 ## $8 1 $b 025. 06 $a 025. 06001 $c 025. 06999 $s 9291 Web sites for genealogists LCSH: Genealogy—Computer network resources— Directories

Example of 085 field (2) 082 04 $8 1 $a 025. 069291 $2 22 085 ## $8 1 $b 025. 06 $a 025. 06001 $c 025. 06999 $s 9291 025. 06 Information storage and retrieval systems devoted to specific disciplines and subjects 025. 06001 -025. 06999 Specific disciplines and subjects 929. 1 Genealogy

083 Additional Dewey Decimal Classification Number (R) (1) To be used for Dewey numbers, including internal and external table numbers, added for subject access Indicators: First - Type of edition 0 - Full edition 1 - Abridged edition Second - Undefined # - Undefined

083 Additional Dewey Decimal Classification Number (R) (2) Subfield codes (selected): $a - Classification number (R) $c - Classification number--Ending number of span (R) $y - Table number--internal subarrangement or add table (R) $z - Table identification (R) $2 - Edition number (NR) $8 - Field link and sequence number (R)

Example of 083 field: Table 2 notation 082 04 $a 725. 17 $2 22 083 0# $z 2 $a 753 $2 22 Embassy Residences in Washington, D. C. LCSH: Embassy buildings—Washington (D. C. ) 725. 17 Official residences has the note “Including embassy, legation, consulate buildings” T 2— 753 Washington, D. C.

Example of 083 field: Parts of a built number (1) 082 00 $a 338. 4761510973 $2 22 083 0# $a 338. 47 $2 22 083 0# $a 615. 1 $2 22 083 0# $z 2 $a 73 $2 22 Pharmaceutical economics and policy LCSH: Pharmaceutical industry—United States

Example of 083 field: Parts of a built number (2) 082 00 $a 338. 4761510973 $2 22 083 0# $a 338. 47 $2 22 083 0# $a 615. 1 $2 22 083 0# $z 2 $a 73 $2 22 338. 47 Economics of services and specific products 615. 1 Pharmaceutical drugs T 2— 73 United States

Example of 083 field: Multiple topics (1) True Stories of C. S. I. : The Real Crimes behind the Best Episodes of the Popular TV Show LCSH: Crime—United States—Case studies Murder—United States—Case studies Criminal investigation—United States—Popular works CSI: crime scene investigation (Television program)

Example of 083 field: Multiple topics (2) 082 00 $a 364. 10973 $2 22 083 0# $a 363. 250973 $2 22 083 0# $a 791. 4572 $2 22 364. 1 Criminal offenses 363. 25 Detection of crime (Criminal investigation) 791. 4572 Single television programs

Question for discussion How might you use the 083 field?