Donahue, Roy L. <br/><br/>
Exploring agriculture :  an introduction to food and agriculture / 
by Roy L. Donahue and James E. Christiansen 
 - 6th ed. 
 - Englewood Cliffs, N. J. :  Prentice-Hall,  1984 
 - 431 p. :  ill. ;  25 cm. 
<br/><br/>Includes Bibliographies and indexes 
<br/><br/><label>ISBN: </label>0132958996 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture<br/>Agriculture--United States