卖ua书：Econ101,102, Stat151,Chem101

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Econ101 microeconomics  $45
1 u! Z. \# C# }: @$ D! k! D" @Econ102 macroeconomics $45
Stat151  $55
! q- d6 d' C% P( K, fChem101(whole set) 100%new    $85
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