Sylvester-Bradley, P. C. <br/><br/>
The species concept in paleontology  : a symposium 

 - London :  The Systematics Association,  1956 
 - 145 p.  : ilus. 
 - The Systematics Association. Publication  ; 2 .
 - The Systematics Association. Publication  ; 2 .
<br/><br/><label>LCCN: </label>58629 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Especies.<br/>Paleontología.
<br/><br/><label>Dewey Class. No.: </label>560  / S9