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001 23038
003 IN-NITTTR
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040 _beng
040 _cIN-NITTTR
041 _aeng
082 _a507 G93T
100 _aGupta, V. K.
245 0 _aTeaching and learning of science and technology. /
_cGupta, V. K.
942 _2ddc
_cBK
999 _c25667
_d25667