Tappan, Helen Niña  1917- <br/><br/>
Foraminifera from the arctic slope of Alaska / 
by Helen Tappan. 
 -- Washington :   United States Government Printing Office,   1962 
 - v. -- 
 (Geological Survey Professional Paper  ;  236-C).
<br/><br/>Contiene : Vol. III. Cretaceous Foraminifera. -- P. 91-209, [29] h. de lam. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Alaska<br/>Foraminíferos fósiles
<br/><br/><label>Universal Decimal Class. No.: </label>563.12(798)