00312nam a2200121Ia 450000500170000000800410001704100080005808200160006610000170008224500430009926000390014230000090018120260720174552.0260720s2005    xx            000 0 und d  aeng  a370.78 GUPR  aGupta, Kumar  aResearch in teaching of social science  aNew DelhibAshish Publishingc2005  a210p