Simpson, George Gaylord <br/><br/>
Quantitative zoology/2nd ed. 

 - 2nd ed. 
 - New york  Harcourt  1960 
<br/><br/><label>Subjects--Index Terms: </label>Zoology  Birds  
<br/><br/><label>Dewey Class. No.: </label>591  / K01;1