Organization for European Economic Cooperation. (1961). L'evolution demographique de 1956 a 1976 en Europe Occidentale et aux Etats-Unis: Demography trends, 1956-1976 in Western Europe and in the United States. s.n.
Citace podle Chicago (17th ed.)Organization for European Economic Cooperation. L'evolution Demographique De 1956 a 1976 En Europe Occidentale Et Aux Etats-Unis: Demography Trends, 1956-1976 in Western Europe and in the United States. [Paris: s.n, 1961.
Citace podle MLA (9th ed.)Organization for European Economic Cooperation. L'evolution Demographique De 1956 a 1976 En Europe Occidentale Et Aux Etats-Unis: Demography Trends, 1956-1976 in Western Europe and in the United States. s.n, 1961.
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