00289nam a2200121Ia 45000030006000000080041000060400015000471000019000622450020000812600037001015460012001380050017001500STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aMichael Eleman  aSocial planning  bCambridge university pressc1979  aEnglish20220125165624.0