000 00580nam a2200181Ia 4500
005 20250508153438.0
008 008 250505s9999 xx 000 0 eng d
037 _aTextual
040 _aFEDL
_beng
_cFEDL
041 _aeng
_2eng
084 _a510.72, UNI
_qFEDL
245 0 _aAnalysis of research in the teaching of mathematics 1957 and 1958
245 0 _cU S Department of Health, Education and Welfare
260 _aWashington, USA
_bU.S. Government Printing Office
_c1960
300 _avi,50p
942 _cTEXL
_h510.72, UNI
999 _c1342936
_d1342936