Cromwell, Elizabeth <br/><br/>
Seed diffusion mechanism in small farmer communities :  lessons from Asia, Africa and Latin America / 
Elizabeth Cromwell 
 - London :  ODI ,  1990 
 - 57p. :  ILL. ;  15 cm. 
 - AAU. Research and Extension Network Paper  No. 21 .
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Seeds<br/>communities
<br/><br/><label>Gov. Doc. Class. No.: </label>GB ODI AAU NP-21