Dregne, E. <br/><br/>
Impact of Land Degradation on Future World Food Production / 
E.Dregne ;U.S. Dept. of Agriculture. 
 - Washington, D.C :  A.S,  1982. 
 - 34 p.; :  map.ill. ;  28 cm. 
 - Economic Research Service  No.677 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Food Production