Woodring, W. P.  1891- <br/><br/>
Geology and paleontology of Canal Zone and adjoining parts of Panama :  description of Tertiary mollusks (gastropods: eulimidae, marginellidae to helminthoglyptidae) / 
by W. P. Woodring. 
 - Washington:   U. S. Government Printing Office,   1970.  
 - iii, 299-452 p., 48-66 plates :  ill., tables ;  29 cm. 
 -  306 .
<br/><br/>Includes bibliographical references (p. 435-440) and index (p. 441-452). 
<br/><br/> A contribution to the history of the Panama land bridge. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mollusks, Fossil<br/>Paleontology--Canal Zone<br/>Paleontology--Panama<br/>Paleontology--Tertiary
<br/><br/><label>Dewey Class. No.: </label>564.09863