000 00319nam a2200121Ia 4500
008 220201s1960 xx 000 0 eng d
041 _aENG
100 _aSCHAAF,W L
245 0 _aBASIC CONCEPTS OF ELEMENTARY MATHEMATICS
260 _aLONDON
_bTHAMES AND HUDSON PUBLISHING COMPANY
_c1960
300 _a384
942 _2ddc
999 _c43549
_d43549