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Unequal beginnings : agriculture and economic development in Quebec and Ontario until 1870
McCallum, John, (1980)
Economic progress of agriculture in developing nations, 1950-68
(1970)
Agricultural development and economic growth
Southworth, Herman M., (1968)
Methods in economics
Manning, Travis W., (1988)
The agricultural potentials of Canadaʹs resources and technology
Manning, Travis W., (1975)
Economic guidelines for land and water resource use in agriculture
Manning, Travis W., (1969)