Symposium on the Impact of Urbanization pn Man's Environment, UAW Family Education Centre, Onaway, Michigan, 1970, & Interntional Union. Automobile, Aerospace and Agricultural Implement Wokers of America. (1971). The impact of urbanization on man's environment, papers and proceedings. United Nations.
Lua i Stíl Chicago (17ú heag.)Symposium on the Impact of Urbanization pn Man's Environment, UAW Family Education Centre, Onaway, Michigan, 1970, agus Aerospace and Agricultural Implement Wokers of America Interntional Union. Automobile. The Impact of Urbanization on Man's Environment, Papers and Proceedings. New York: United Nations, 1971.
Lua MLA (9ú heag.)Symposium on the Impact of Urbanization pn Man's Environment, UAW Family Education Centre, Onaway, Michigan, 1970, agus Aerospace and Agricultural Implement Wokers of America Interntional Union. Automobile. The Impact of Urbanization on Man's Environment, Papers and Proceedings. United Nations, 1971.