http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
a guide to the use of index terms for the SAE electronic database
The SAE electronic database, available on the SDC ORBIT search service, includes all SAE technical meeting papers published since 1965, as well as FISITA meeting papers published since 1972.
Includes SAE user manual, updated 1985, pages 57-80.
Information storage and retrieval systems