Bond, J. J.  1931- <br/><br/>
Technical and economic causes of productivity changes in U.S. wheat production, 1949-76 / 
by J. J. Bond and D. E. Umberger ; prepared by Science and Education Administration 
 - Washington, D.C. :  United States Government Printing Office,  1979 
 - vi, 102 p. :  ill. ;  24 cm. 
 - Technical bulletin - United States Department of Agriculture ;  no. 1598 .
<br/><br/> Cover title 
<br/><br/>Bibliography: p. 95-102 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Wheat--United States<br/>Wheat--Economic aspects--United States
<br/><br/><label>Dewey Class. No.: </label>338.173110973