Science in framing  
/ United States Department of Agriculture 
 - Washington:    United States Department of Agriculture,     1947 
 - 943p. 
<br/><br/><label>Subjects--Topical Terms: </label>
<br/><br/><label>Subjects--Index Terms: </label>Agriculture 
<br/><br/><label>Universal Decimal Class. No.: </label>R 63(058)  / H7