Mitchell, Roger L.,  1932- <br/><br/>
Crop growth and culture / 
[by] Roger L. Mitchell. 
 - [1st ed.] 
 - Ames :  Iowa State University Press,  [1970] 
 - viii, 349 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0813803772 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Growth (Plants).<br/>Agriculture.
<br/><br/><label>LC Class. No.: </label>QK731  / M57 1970