Singh, S.S. . <br/><br/>
Principles and Practices of Agronomy /  Textual Documents 
S.S.Singh. 
 - 1st ed. / 
 - New Delhi :  Kalyani Publisher ,  1991. 
 - 319p. :  1st ed. ;  22cm . 
<br/><br/><label>Subjects--Index Terms: </label>Agronomy G-Technology 
<br/><br/><label>Dewey Class. No.: </label>630.58  / Si 61 Pr