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Filtern nach: Fach J13 - Demographic economics - Fertility ; Family planning ; Child care ; Children ; Youth Entfernen Zwang Fach: J13 - Demographic economics - Fertility ; Family planning ; Child care ; Children ; Youth Fach O33 - Technological change ; Research and development - Technological change : Choices and consequences ; Diffusion processes Entfernen Zwang Fach: O33 - Technological change ; Research and development - Technological change : Choices and consequences ; Diffusion processes

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