000 00382nam a2200157Ia 4500
008 160615s9999 xx 000 0 und d
100 _aWEBBER(G Cuthbert) & BROWN(John A)
245 _aNumber concepts and geometry
260 _aMassachusetts
260 _bAddison-Wesley
260 _c1969
300 _axi p. + 416
942 _cBooks
999 _c2878
_d2878