Timmer, W.J.
The Human side of agriculture: theory and practice of agricultural extension (with special reference to developing rural communities in the tropics and sub-tropics) / byW.J. Timmer - New York: Vantage Press, 1982 - xii,223p.: ill.
Agricultural extension work
The Human side of agriculture: theory and practice of agricultural extension (with special reference to developing rural communities in the tropics and sub-tropics) / byW.J. Timmer - New York: Vantage Press, 1982 - xii,223p.: ill.
Agricultural extension work