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082 _a371.26
_bGAY
100 _aGayen,A.K
_952534
245 _aMeasurement Of Achievements In Physics And Chemistry
260 _aNew Delhi:
_bThe National Council of Educational Research and Training,
300 _a545p.;
_c25cm
650 0 _aEducation
700 _aNanda,P
700 _aDuari,P
942 _2ddc
_cLM
999 _c161434
_d161434