http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
National Aeronautics and Space Administration.
Also available via Internet from the NTRS web site. Address as of 05/28/09: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19870009546%5F1987009546.pdf ; current access is available via PURL.
Microfiche. [Washington, D.C. : National Aeronautics and Space Administration], 1987. 1 microfiche.