Report on the agro-ecological zones project. 

 - Rome :  Food and Agriculture Organization of the United Nations,  1978- 
 - v.   3 
 - World soil resources reports ;  48 .
<br/><br/>v. 3. Methodology and results for South and Central America. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural ecology.
<br/><br/><label>LC Class. No.: </label>S591  S589.7  / .W875 no. 48 
<br/><br/><label>Dewey Class. No.: </label>630/.2/745096�19