Yawalkar, K.S., <br/><br/>
Manures and fertilizers 
By K.S. Yawalkar, J.P. Agarwal and S. Bokde 
 - 2nd rev. ed. 
 - Nagpur:  Agri horticultural publishing house,  1967. 
 - 288p. 
<br/><br/><label>Subjects--Index Terms: </label>Techniques, equipment & materials 
<br/><br/><label>Dewey Class. No.: </label>631.8