Norton, Roger D.,  1942-, <br/><br/>
The book of chac :  Programing studies for mexican agriculture / 
Edited by Roger d. norton, and Leopoldo Solís m. 
 - 602 páginas 
<br/><br/><label>ISBN: </label>0-808-2585-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultura--Aspectos economicos--Modelos matematicos--Mexico
<br/><br/><label>LC Class. No.: </label>HD1792  / N644