000			00347nam a2200145Ia 4500
008			240930s9999||||xx |||||||||||||| ||und||
020			_a8170969867
082			_a371.33 _bDAS
100			_aDas,B.C.
245		0	_aEducational technology
260			_aNewdelhi _bkalyani _c1996
300			_a162p.; _c24cm
650			_aTeaching aids
942			_cLM
999			_c131691 _d131691