Campbell, Robert S. <br/><br/>
Range resources of the southeastern United States 

 - Madison, Wis. :  American Society of Agronomy,  1973 
 - 78 p.  : ilus. ; mapas 
 - ASA. Special publication  ; 21 .
 - ASA special publication  ; 21 .
<br/><br/><label>LCCN: </label>71601 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pastizales--Ecología.<br/>Pastizales--E.U.A.