000 00322nam a2200121Ia 4500
008 210901s1965 xx 000 0 eng d
082 _a510 SKE
100 _aSkemp, Richard R.
245 0 _aUnderstanding mathematics - 5 (T)
260 _aLondon
_bUnversity of London P[ress Ltd.
_c1965
300 _a358p.
942 _2ddc
_cBK
999 _c8665
_d8665