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020 _a9231021427
040 _cPK-IsLIS
082 _a373
_bM8311
245 0 _aStudies in mathematics education
_c/ Robert Morris
260 _bUNESCO Publications,
_aNew York :
_c1985
300 _avarious pagings
490 _v03, 04
650 _aEducation-Secondary
942 _cBK
505 0 _a1. Volume 3: the mathematical education of primary-school teachers 2. Volume 4: the education of secondary school teachers of mathematics