Tropical grazing land ecosystems 

 -  1979 
 - natural resources research; 16 .
<br/><br/><label>Standard No.: </label>90,580 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>GEOGRAPHY
<br/><br/><label>Dewey Class. No.: </label>U671.192, L9