000 00267nam a2200109Ia 4500
100 _aServais, W. (ed) & Varga, T. (ed)
942 _cBK
245 _aTeaching school mathematics
260 _aPenguin Books, Unesco
_c1971
082 _a375.51 Ser/Var
300 _aiv,308p
999 _c10354
_d10354