http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
energy progress & environmental protection : proceedings of the sixteenth Energy Technology Conference, February 28-March 2, 1989, Washington, D.C
Energy progress & environmental protection
Energy technology and environmental protection
Energy Technology Conference 1989 : Washington, D.C.)