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General Assembly of the International Union for the Scientific Investigation of Population Problems ( Londres ( 1931) ( . 2ª)(Nombre de reunión)

Preferred form: General Assembly of the International Union for the Scientific Investigation of Population Problems ( Londres ( 1931) ( . 2ª)

Machine generated authority record

Work cat.: (ES-MaACL)122704: General Assembly of the International Union for the Scientific Investigation of Population Problems ( Londres ( 1931) ( . 2ª), Problems of population , 1932.