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math 53: differencial equations by poling, boggess, arnold, 2nd edition - $60
econ 50/51: microeconomics by besanko and braeutigam, 2nd edition - $75
cs 154: intro to automata theory, languages, and coomputation by hopcroft, motwani, ullman, 3rd edition - $70
econ 90: intro to financial accounting by horngren, sundem, elliot, philbrick, ninth edition - $75
econ 102a: the practice of business statistics by moore, mccabe, duckworth, sclove, 1st edition - $60
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