Simpson, George Gaylord. <br/><br/>
Quantitative zoology / 
George Gaylord Simpson, Anne Roe, Richard C. Lewontin. 
 - Rev. ed. 
 - New York :  Harcourt, Brace & World,  c1960. 
 - vii, 440 p. ;  22 cm. 
<br/><br/> Includes index. 
<br/><br/><label>LCCN: </label>59-6483 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Zoology.