Efficient use of fertilizers / 
edited by: Vladimir Ignatieff 
 - Washington :      FAO ,  1949 
 - x, 182p. :  ill. ;  20 cm. 
 - FAO agricultural studies .
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizers<br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>631.8  / FAO-6