Huffman, Wallace E. <br/><br/>
Science for agriculture :  a long-term perspective / 
Wallace E. Huffman & Robert E. Evenson. 
 - Ames :  Iowa State University Press,  1993. 
 - xv, 268 p. :  ill., map ;  26 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>081381359X  RM* 
<br/><br/><label>LCCN: </label>93-016097 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--Research--United States.<br/>Agriculture--Research--Economic aspects--United States.