McDougall, W. B. <br/><br/>
Plants of Big Bend National Park 

 - Washington :  Government Printing Office,  1957 (c.1951) 
 - 209 p.  : ilus 
<br/><br/><label>LCCN: </label>28000 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botánica--E.U.A.
<br/><br/><label>Dewey Class. No.: </label>581.973  / M23