Area and production of principal crops in India :  1988-89/ 

 - New Delhi :  Directorate of economics & statistics,  1990. 
 - xxi, 335p.: 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Principal crops
<br/><br/><label>Dewey Class. No.: </label>R 633.(54)  / IND N90A