共三本书8 A, \. R# n$ o3 w. q$ F1 q
1.parallels:taking a stand in english ' |+ W6 v" O% T: o: x6 T4 y2.exploring content 1: G9 `& o) I7 ?% Z# G$ i4 |1 M3 k5 T
3.calculus:a first course,stewart et.al# t3 s- ]8 L5 w* |
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