Annual report 1989  : worldwide potato and sweet potato improvement 
/ International potato center 
. - Lima  : International potato center, 1989
. - XVI-178 p.  : ill., couv. ill.  ; 23 cm 
 - International potato center  02566311 .
<br/><br/><label>Source: </label> Achat 
<br/><br/><label>Universal Decimal Class. No.: </label>633.492.