Kosanke, R. M. (1973). Palynological studies of the coals of the Princess reserve district in northeastern Kentucky. United States Department of the Interior, Geological Survey.
Chicago Style (17th ed.) CitationKosanke, Robert M. Palynological Studies of the Coals of the Princess Reserve District in Northeastern Kentucky. Washington: United States Department of the Interior, Geological Survey, 1973.
MLA (9th ed.) CitationKosanke, Robert M. Palynological Studies of the Coals of the Princess Reserve District in Northeastern Kentucky. United States Department of the Interior, Geological Survey, 1973.
Warning: These citations may not always be 100% accurate.