Martin, Robert Eugene, 1944-  Martin, Robert Eugene, 1944- <br/><br/>
Cranial and bacular variation in populations of spiny rats of the genus Proechimys (Rodentia: Echimyidae) from South America. 

 - Washington,  Smithsonian Institution Press; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.]  1970. 
 - Smithsonian contributions to zoology ;  no. 35 .
<br/><br/>Bibliography: p. 17-18. 
<br/><br/><label>ISBN: </label> 0.35 
<br/><br/><label>LCCN: </label>78605830 //r852 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Proechimys.<br/>Mammals -- South America.--Mammals -- South America.<br/>Bones.<br/>Mammals -- Variation.--Mammals -- Variation.
<br/><br/><label>LC Class. No.: </label>QL1  / .S54 no. 35 
<br/><br/><label>Dewey Class. No.: </label>591/.08 s