000 00283nam a2200121Ia 4500
020 _a0153531681
082 _a512
_bDIS
245 _aDiscovering algebra: skills practice book
260 _aNew York
_bHarcourt Brace Jovanvich
_c1974
300 _b159p.
546 _aeng
942 _cBK
999 _c97764
_d97764