Williams, Ernest Edward  1914-1998 <br/><br/>
Variation and selection in the cervical central articulations of living turtles / 
Ernest Edward Williams. 
 -- New York :   [s.n.],   1950 
 - p. 509-56. -- 
 (Bulletin of the American Museum of Natural History  ;  94, 9).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Quelonios<br/>Tortugas
<br/><br/><label>Universal Decimal Class. No.: </label>598.13