McDougall, W. B.  1883- <br/><br/>
Plants of Yellowstone National Park./ 
by W.B. McDougall and Herma A. Baggley.  
 - Washington :  Government Printing Office,  1936. 
 - iv, 160 pages ;  illustrations, some color ;  24 cm. 
<br/><br/> "With illustrations and keys for identification." -- title page. 
<br/><br/>Index: p.142-160. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plants--Yellowstone National Park.
<br/><br/><label>LC Class. No.: </label>F 722  / M33 1936