CHOPRA Kanchan <br/><br/>
Substitution and complementory between inputs in paddy cultivation 
CHOPRA Kanchan 
 -  1985 
<br/><br/><label>Standard No.: </label>149114 
<br/><br/><label>Source: </label> Textbook 
<br/><br/><label>Dewey Class. No.: </label>"X, M5/TD"