Copley, M J, et al. <br/><br/>
Crops in peace and war: Yearbook of agriculture 1950-1951 / 
Copley, M J, et al. 
 -  United States Government Printing Office, Washington,  1951 
 - p. ;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crops & their production
<br/><br/><label>Dewey Class. No.: </label>631 COP-C