Howell, Arthur H.  1872-1940. <br/><br/>
Revision of the American pikas  (genus Ochotona) 
By Arthur H. Howell. 
 - Washington,  Govt. print. off.,  1924. 
 - iv, 57, [1] p.  illus. (maps) VI pl. (incl. front) on 4 l.  24cm. 
 - U.S. Dept. of agriculture. Bureau of biological survey. North American fauna no. 47 .
<br/><br/><label>LCCN: </label>agr24000746  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pikas.
<br/><br/><label>LC Class. No.: </label>QL115  / .A4 no. 47 
<br/><br/><label>Gov. Doc. Class. No.: </label>I 49.30:47