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Metalliferous black shales and related ore deposits : proceedings, 1989 United States Working Group

Denver, CO : U.S. Geological Survey, Books and Open-File Reports Section, 1991. 1991

Metalliferous black shales and related ore deposits : program and abstracts : 1988 meeting of the Un

International Geological Correlation Programme. Project 254. United States Working Group.
Washington : Dept. of the Interior, U.S. Geological Survey : Free on application to the Books and Open-File Services Section, U.S. Geological Survey, 1989. 1989

Proceedings for a Workshop on Deposit Modeling, Mineral Resource Assessment, and Their Role in Susta

Workshop on Deposit Modeling, Mineral Resource Assessment, and Their Role in Sustainable Development (2000 : Rio de Janeiro, Brazil)
Reston, Va. : U.S. Geological Survey, 2007. 2007