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020 _a9231010166
024 _a14427
037 _cTextual
040 _aCRL
_cCRL
_beng
041 _2eng
_aeng
082 _aT:3(B), L2.3
110 _aUNESCO
245 0 _aNew trends in mathematics teaching
260 _aParis
_bUNESCO France
_c1972
300 _a145p.
_ccm.
490 _aTeaching of basic sciences
650 _a EDUCATION
650 _aTEACHING
_934578
700 _aUNESCO
942 _hT:3(B), L2.3
_cTEXL
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999 _c1003565
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