Geochemistry of Minor Elements in Coals of the Northern Great Plains Coal Province - Zubovic, Peter, 1915-; Stadnichenko, Taisia, 1894-1958; Sheffey, Nola B., 1929-1996 (Washington : United States Government Printing Office, 1961)
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Keywords: geochemie; ložiska uhlí; coal deposits; geochemie; Wyoming; Severní Dakota; Montana; Wyoming; North Dacota; Mont. (stát USA); bulletiny; information bulletins