Field-crop enterprises, 
[by] Kary C. Davis, Walter S. Newman, Edward H. Jones [and others] Edited by R. W. Gregory. 
 - Chicago,  Philadelphia [etc.]  J.B. Lippincott company  [1946] 
 - 2 p. l., vii-xxvii, 552 p.  illus., (incl. diagrs.)  22 cm. 
<br/><br/> "Revised edition." 
<br/><br/>"Library books": p. 525. "References" at end of some of the chapters. 
<br/><br/><label>LCCN: </label>agr46000288  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Field crops--United States.
<br/><br/><label>LC Class. No.: </label>SB187.U6  / F5 1946 
<br/><br/><label>Dewey Class. No.: </label>633