Seitz, Wesley D. <br/><br/>
Economic of resources, agriculture, and food/ 
Wesley D. Seitz, Gerald C. Nelson, and Harold G. Halcrow 
 - Second edition 
 - New York:  McGraw-Hill,    c2002. 
 - xxiv, 520 pages :  illustrations ;  25 cm. 
<br/><br/>Includes bibliographical references and index.