00310nam a2200133Ia 4500008004100000041000800041082001500049100001500064245003300079250001200112260003600124300000800160365000800168231011s9999    xx            000 0 und d  aeng  a658.83/SIN  aSingh S.P.  aMarketing Research (SinghSP)  aFirst    bWisdom Publications Delhic2017  a340  b356