000 00295 a2200133 4500
020 _a0676356850
082 _a428
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090 _c19862
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245 _aHomework
_bmath
260 _aNew York
_bRandom House
_c1989
_g1989
300 _a64p.
_c28cm
650 _aOther languages
942 _cL
999 _c47553
_d47553