00337nam a2200121Ia 450000500170000000800410001708200150005810000230007324500520009626000420014830000090019065000160019920240821155004.0240821s9999||||xx |||||||||||||| ||und||  a510.07 MCI  aMcIntosh, Jerry A. 0aPerspectives on secondary mathematics education  aEnglewood CliffsbPrentice Hallc1971  a259p  aMathematics