Report of the fourth meeting of the FAO fertility industry. 

 - Rome :  FAO ,  1962 
 - 29p. :  il. ;  30 cm. 
<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-2