00296nam a2200121Ia 45000030006000000080041000060400015000471000023000622450051000852600009001365460012001450050017001570STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aBenoy Kumar Sarkar  aSociology of Races cultures and Human progress  c1939  aEnglish20220125165359.0