000			00316nam a22001337a 4500
999			_c12961 _d12961
005			20230404161914.0
008			220127b ||||| |||| 00| 0 eng d
100			_aBHATNAGAR, A.B
245			_aTEACHING OF SCIENCE
250			_a4th
260			_aMEERUT _bR.LAL BOOK DEPOT _c1998
300			_a330p
942			_2ddc _cBK