Korenkov D A Tr. <br/><br/>
Nitrogen fertilizers 
Korenkov D A Tr. 
 - New Delhi       Oxonian Press Pvt.Ltd.        1983 
 - 309p.  cm. 
<br/><br/><label>Standard No.: </label>53211 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Soil fertility<br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>J:241:3, M3