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020 _a9231011146
024 _a27545
037 _cTextual
040 _aCRL
_cCRL
_beng
041 _2eng
_aeng
082 _aT:3:A, L3. 2
100 _aRichmond P. E.
_9620149
245 0 _cRichmond P. E.
_aNew trends in integrate science teaching Vol. II . Ed. by P. E.Richmond .
260 _aParis
_bUnesco France
_c1973
300 _a239P.
_ccm.
490 _aIntegrated science.
650 _aEDUCATION
942 _hT:3:A, L3. 2
_cTEXL
_2cc
999 _c1003563
_d1003563