Statistics of crop responses to fertilizers. 

 - Rome :      FAO ,  1966 
 - viii, 112p. :  ill. ;  20 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizers<br/>Crop yield<br/>Economic aspects<br/>Mathematical models
<br/><br/><label>Dewey Class. No.: </label>631.8  / FAO-15