JOERDENS-Roettger, Dagmar Seed potato production in the philippines: in vitro culture and rapid multiplica /[by] Dagmar Joerdens-Roettger - Federal Republic Eschborn 1987 - 114 p.- - Schriftenreihe der GTZ no; 202 . Includes bibliography. ISBN: 3880853479 Dewey Class. No.: 631.53 / JOE