Encyclopedia of the Biosphere Humans in the World Ecosystems: Prairies and Boreal Forest 

 - Barcelona  Gale Group  2000 
 - 460 pages ;  col. ill. ;  28 cm. 
<br/><br/> Includes index and bibliographic reference. 
<br/><br/><label>ISBN: </label>0-7876-4514-9 
<br/><br/><label>Dewey Class. No.: </label>R/333.95/B52/V8/2000