000 00486nam a2200193Ia 4500
008 230524s9999 xx 000 0 und d
040 _cUDSM
050 _aQTO QA139.C3
100 _aCarpenter, D.
245 0 _aTeacher's guide and resource book for making arthmetic clear
260 _aNew York
260 _bMacMillan and Company
260 _c1957
300 _a199p.
300 _c28cm.
700 _aill.
942 _2Library of Congress Classification
942 _cBook
999 _c32570
_d32570