00295nam a2200121Ia 45000030006000000080041000060400015000471000016000622450057000782600009001355460012001440050017001560STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aLal Das, K.  aPractice of social research: Social work Perspective  c2000  aEnglish20220125165729.0