Comprehensive scheme for studying the cost of cultivation of principal crops 

 - Delhi  Manager of Publicaitons India         1991 
 - 189p.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultura Industry
<br/><br/><label>Dewey Class. No.: </label>X9(J):26.2.N9, N1