000			00372nam a2200157Ia 4500
008			240930s9999||||xx |||||||||||||| ||und||
020			_a8170969867
082			_a371.33 _bDAS
100			_aDas,B.C.
245		0	_aEducational technology
250			_a2nd Ed.;
260			_aNewdelhi _bkalyani _c1996
300			_a162p.; _c23cm
650			_aTeaching aids
942			_cLM
999			_c131694 _d131694