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Farm enlargement and consolidation in Ontario
Hill, R. G. F., (1966)
Projested trends for farm operations, farm size, replacement needs and rural farm male migration in Georgia for the period 1960-1970-72
Lester jr., Herschel T., (1964)
Lʹ exode rural dans la province de Québec, 1951-1961
Keyfitz, Nathan, (1962)