Exploration, maintenance, and utilization of sweet potato genetic resources : Report of the first sweet potato... - Lima : El Centro, 1988 - 369 p. ; gráfs. mapas D19-200 LCCN: 70167 Subjects--Topical Terms: Papa--Enfermedades por virus.Papa--Genética.Papa--Germoplasma. Dewey Class. No.: 635.21 / C47