Sen, S P . <br/><br/>
Biofertilizers:Potentialities and Problems /  Textual Documents 
S P Sen& P Palit. 
 - 1st ed / 
 - Calcutta :  Naya Prakashan ,  1988. 
 - 259p. ;  22cm.. 
<br/><br/><label>ISBN: </label>81-85109-86-9 
<br/><br/><label>Subjects--Index Terms: </label>Botany Biofertilizers 
<br/><br/><label>Dewey Class. No.: </label>631.8  / Se 55 Bi