Evolutionary trends in Foraminifera :  a collection of papers dedicated to I. M. van der Vlerk on the occasion of his 70th birthday, edited by G. H. R. von Koenigswald and others 

 - Amsterdam :  Elsevier Publishing,  1963 
 - 355 p. :  ill., port. ;  25 cm. 
<br/><br/>Includes bibliographies 
<br/><br/><label>Subjects--Personal Names: </label><br/>Vlerk, I. M. van der
<br/><br/><label>Subjects--Topical Terms: </label><br/>Foraminifera, Fossil