Source Codes for Subjects

Conal Tuohy recently pointed the topic maps mailing list to his TM4J-driven website The New Zealand Electronic Text Centre. Roaming about there, I discovered a link to MADS (Metadata Authority Description Schema).

The Library of Congress' Network Development and MARC Standards Office, with interested experts, has developed the Metadata Authority Description Schema (MADS), an XML schema for an authority element set that may be used to provide metadata about agents (people, organizations), events, and terms (topics, geographics, genres, etc.).

MADS points to the Source Codes for Subjects (link below the title here). Some of the codes are:

aass
"Asian American Studies Library subject headings" in A Guide for establishing Asian American core collections. (Berkeley, CA: Asian American Studies Library, University of California, Berkeley)
aat
AAT: Art & architecture thesaurus (New York, NY: Oxford University Press)
abne
Autoridades de la Biblioteca Nacional de España (Madrid: Biblioteca Nacional de España)
agrifors
AGRIFOREST-sanasto (Helsinki: Helsingin Yliopisto)
agrovoc
AGROVOC multilingual agricultural thesaurus. (Rome: APIMONDIA)