Summary report to the Group on Coal Geology, Geological Society of America concerning meetings of the Nomenclature Committee and Petrographic Methods Committee of the International Committee on Coal Petrology, Krefeld and Essen, Germany May 15, 16, 17, 18, 1961 /
submitted by R.M. Kosanke, W. Spackman.
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Limited (search only) 1961 | University of Illinois at Urbana-Champaign |