Metalliferous black shales and related ore deposits : program and abstracts : 1988 meeting of the United States Working Group of International Geological Correlation Program Project 254 /
International Geological Correlation Programme.Project 254.United States Working Group.
Grauch, Richard I.
Leventhal, Joel S.
Denver, CO : U.S. Geological Survey : Free on application to the Books and Open-File Services Section, U.S. Geological Survey,
1989.
Includes bibliographical references.
Shale
Ore deposits