Degras, Lucien <br/><br/>
The yam:  a tropical root crop 

 - London :  Macmillan,  1993. 
 - xv,408p. ;  ill. ; 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0333574567 
<br/><br/><label>LC Class. No.: </label>SB211.Y3  / D36 1993