00317nam a2200145Ia 45000030006000000080041000060400015000471000018000622450025000802500011001052600020001163000006001365460012001420050017001540STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aKothari, C.R.  aResearch methodology  aSecond  c2010aNew Delhi  a0  aEnglish20220125160150.0