Purseglove, J.W. . Tropical Crops / Textual Documents J.W. Purseglove. - 1st ed. / - London : The English Language Book Society and Longman , C1968. - xiii,719p. : ill ; 24cm . - Vol. l & ll- Index ISBN: 0-582-46680-6 Subjects--Index Terms: Botany Crops-Tropical Crops-Dicotyledons G-Botany Dewey Class. No.: 583 / Pu 97 Tr