Tappan, Helen Niña 1917-
Foraminifera from the arctic slope of Alaska / by Helen Tappan. -- Washington : United States Government Printing Office, 1962 - v. -- (Geological Survey Professional Paper ; 236-C).
Contiene : Vol. III. Cretaceous Foraminifera. -- P. 91-209, [29] h. de lam.
Alaska
Foraminíferos fósiles
563.12(798)
Foraminifera from the arctic slope of Alaska / by Helen Tappan. -- Washington : United States Government Printing Office, 1962 - v. -- (Geological Survey Professional Paper ; 236-C).
Contiene : Vol. III. Cretaceous Foraminifera. -- P. 91-209, [29] h. de lam.
Alaska
Foraminíferos fósiles
563.12(798)