Stoskopf , Neal C. <br/><br/>
Understanding crop production / 
Neal C. Stoskopf. 
 - Reston :  Reston Publishing ,  1981 
 - 433 p. :  ill. ;  25 cm . 
<br/><br/>Includes references and index 
<br/><br/><label>ISBN: </label>0835980286 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plants, Cultivated<br/>Agriculture