Singh, A. L. <br/><br/>
Nitrogen fixation in Indian rice fields (Azolla & blue green algae)/ 
A. L. Singh, Pushp Lata Singh 
 - Bikaner :  Agro Botanical Pub.(India),  1989 
 - [8], 236 p. :  ill., maps, plan;  22 cm. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>8185031258  Rs.200.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nitorgen fertilizers--India<br/>Nitrogen--Fixation--India<br/>Nitrogen-fixing algae as fertilizer<br/>Cyanobacteria
<br/><br/><label>Dewey Class. No.: </label>631.840954