http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
proceedings of the Third Symposium on Heavy Gas and Risk Assessment, Bonn, Wissenschaftszentrum, November 12-13, 1984
Symposium on Heavy Gas and Risk Assessment 1984 : Bonn, Germany)
Bundesministerium für Forschung und Technologie.
"The symposium was sponsored by the Bundesministerium fur Forschung und Technologie."