000 00255nam a2200085Ia 4500
008 170620s9999 xx 000 0 und d
100 _aAggarwal- J. C.
245 0 _aPrinciples- Methods and Techniques of Teaching
260 _bNew Delhi- Vikas Publishing House Pvt. Ltd.
260 _c2002
999 _c23794
_d23794