000 00306 a2200121 4500
005 20250319124653.0
082 _a513 WIL
100 _aWILLIAMS, K. W.
245 _aArithmetic: A Semi programmed Text
260 _aLondon,
_bPrentice-Hall,
_c1970.
300 _axi, 258p.: ill.
_bIndex.
_c23cm.
942 _2ddc
_cBKS
999 _c972
_d972