000			00317nam a22001337a 4500
999			_c12959 _d12959
005			20230325123219.0
008			220127b ||||| |||| 00| 0 eng d
100			_aBHATNAGAR, A.B
245			_aTEACHING OF SCIENCE
250			_a4th
260			_aMEERUT _bR.LAL BOOK DEPOT _c2004
300			_a330p.
942			_2ddc _cBK