http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Industrial minerals in the european market
proceedings of the Sixth International Symposium, held in Hannover, Fed. Rep. of Germany, at the Federal Institute for Geosciences and Natural Resources October 15-17, 1991
E. Schweizerbart'sche Verlagsbuchhandlung (Nagele u. Obermiller)