Audio-visual aids for cooperative education and training,
by C. N. Botham in collaboration with the Cooperative Credit and Rural Sociology Branch, Rural Institutions and Services Division, F.A.O.
- Rome, London, Rome, London, F.A.O.; H.M.S.O., F.A.O.; H.M.S.O., 1967.
- FAO agricultural development paper ; no. 86 .