1) ECON 186 Texbook: Economics Today - The Micro vVew, 4th Edition." b% Y# `& _0 O, G1 r" a
2) STAT 218: Business Statistics: A Decision Making Approach, 2008 Edition , e4 c3 E) b: _1 G, K. D o- W( {# n) b- q- K! T6 e' l
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发表于 2008-8-19 14:33
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