00290nam a2200109Ia 4500008004000000082001600040100002300056245003100079260002900110300001200139650002900151210210b1984   xxu||||| |||| 00| 0 eng d  a370.15 CHIC  aCHRISTIAN (Jyoti).  aClass-room group dynamics.  aMeerut.bAnu booksc1984  axii,150  aEducational Psychology