Evolution of communities  proceedings of the North American paleontological convention, Field Museum of Natural History, Chicago September 5-7, 1969 

 - Inc., Lawrence, KS  Allen Press  1970 
 - 139 p. : ill. ; 25 cm. 
<br/><br/>includes bibliographical references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Paleontology--Congresses