00318nam a2200097Ia 4500008004100000100002000041245008500061260004800146260000900194999001700203170620s9999    xx            000 0 und d  aAggarwal- J. C. 0aTheory and Principles of Education- Philosophical & sociological bases of educat  bNew Delhi- Vikas Publishing House Pvt. Ltd.  c2001  c23796d23796