Coursey, Donald Gilbert. <br/><br/>
Yams :  an account of the nature, origins, cultivation and utilisa tion of the useful members of the Dioscoreaceae / 
D. G. Coursey. 
 - London :  Longmans ,  1967. 
 - xiv, 230 p. :  ill., plates, maps, tables, diagrs ;  22 cm. 
 - Tropical agriculture series. .
<br/><br/>Includes bibliography. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Yams.
<br/><br/><label>Dewey Class. No.: </label>633.49 COU