Urquhart, D. H. Cocoa / By D. H. Urquhart. - 2d ed. - London : Longmans, c1961. - 293 p. : ill. ; 23 cm. - Tropical agriculture series . - Tropical agriculture series. . Includes index. Subjects--Topical Terms: Cacao. Dewey Class. No.: 633.74 / URC 1961