Galletti, R. Nigerian cocoa farmers : an economic survey of Yoruba cocoa farming families / R. Galletti, K.D.S. Baldwin & I.O. Dina - London : Oxford University Press , 1956 - xxxix, 744p. : ill. ; 25 cm. Includes bibliographical references and index. Subjects--Topical Terms: AgricultureEconomic aspectsCocoaCrops Dewey Class. No.: 633.74 / GAL