Mamay, Sergius H. 1920-2008
Occurrence and significance of Marine Animal remains in American coal balls / by Sergius H. Mamay and Ellis L. Yochelson. -- Washington : United States Government Printing Office, 1962 - P. 194-224, [10] h. de lam. -- (Geological Survey Professional Paper ; 354-I).
Fósiles marinos
56
Occurrence and significance of Marine Animal remains in American coal balls / by Sergius H. Mamay and Ellis L. Yochelson. -- Washington : United States Government Printing Office, 1962 - P. 194-224, [10] h. de lam. -- (Geological Survey Professional Paper ; 354-I).
Fósiles marinos
56