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%T Towards a theory of social development %A Ginsberg, Morris %E Busch, Alexander %P 104-109 %D 1959 %I Ferdinand Enke %= 2010-10-05T13:50:00Z %~ DGS %> https://nbn-resolving.org/urn:nbn:de:0168-ssoar-188203 %C DEU %C Stuttgart %G en %9 Sammelwerksbeitrag %W GESIS - http://www.gesis.org %~ SSOAR - http://www.ssoar.info