Annual report 1980-81 / Ministry of Petroleum, Chemicals and Fertilizers 

 - Delhi :  Manager of publications,  1981 
 - 60p. ;  20cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizer industry<br/>Fertilizer industry
<br/><br/><label>Dewey Class. No.: </label>351.54  / IPD