http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Energy Efficiency and Renewable Energy Clearinghouse (U.S.)
No longer available for sale by the Supt. of Docs.
Also available via Internet from the NREL web site. Address as of 06/06/01: http://www.nrel.gov/docs/gen/old/20693.pdf; current access is available via PURL.
Includes bibliographical references (page 8).