KOSANKE, Robert M.
Palynological studies of the coals of the Princess reserve district in Northeastern Kentucky / by Robert M. Kosanke. -- Washington : United States Government Printing Office, 1973 - 22 p., [2] h. de lam. -- (Geological Survey Professional Paper ; 839).
Kentucky
Palinología
Polen fósil
56:581.33(769)
Palynological studies of the coals of the Princess reserve district in Northeastern Kentucky / by Robert M. Kosanke. -- Washington : United States Government Printing Office, 1973 - 22 p., [2] h. de lam. -- (Geological Survey Professional Paper ; 839).
Kentucky
Palinología
Polen fósil
56:581.33(769)