Nigerian cocoa farmers : an economic survey of Yoruba cocoa farming families /
by R. Galletti, chief research officer, K. D. S. Baldwin, and I. O. Dina, senior research officers.
- London : Published on behalf of the Board by Oxford University Press, 1956.
- xxxix, 744 p. : 5 fold. col. maps, diagrs., tables. ; 24 cm.