Manshard Walther Tropical agriculture A geographical introduction and appraisal Manshard Walther - London Longman UK 1974 - x,226p. cm. - Geographies for advanced study . Bibliography p. 201-22; Index:P223-26 ISBN: 0582481872 Source: General Book Subjects--Topical Terms: Agricultural Geography Dewey Class. No.: U672(J).192.N7, L4