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024 _a61458
037 _cTextual
040 _aCSL
_beng
_cCSL
041 _aeng
082 _aA:(T), N2
100 _aLayton David Ed.
245 0 _cLayton David Ed.
_aInnovations in science and technology education
260 _aParis
_bUnesco
_c1992
300 _a220p.
_ccm.
650 _aScience
942 _hA:(T), N2
_cTEXL
_2CC
999 _c74239
_d74239