Science for better living :    the yearbook of agriculture 1968 

 - Washington :    U.S. Department of Agriculture,    1968 
 - 386p. :    Ill., col., maps;    23 cm. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Agriculture
<br/><br/><label>Dewey Class. No.: </label>630