Stoskopf, Neal C.,  1934- <br/><br/>
Understanding crop production 
Neal C. Stoskopf 
 - Reston, Va.  Reston Pub. Co.  c1981 
 - xiv, 433 p.  ill.  25 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plants, Cultivated<br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>631.5