http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Types and applications of engineering drawings
American Society of Mechanical Engineers
"This revision was approved as an American National Standard on June 24, 1999."--P. iv.
"Date of issuance: February 29, 2000."--P. [ii]