Sen, S.P.. <br/><br/>
Nitrogen Assimilation and Crop Productivity /  

 - New Delhi :   Associated Publishing Company. 
 - xiii, 311p ;  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture <Nitrogen>
<br/><br/><label>Dewey Class. No.: </label>J:241p44`N76  / L8;1