"One of the most careful and intensive among the introductory texts that can be used with a wide range of students. It builds remarkably sophisticated technical skills, a good sense of the nature of a formal system, and a solid and extensive background for more advanced work in logic. . . . The emphasis throughout is on natural deduction derivations, and the text's deductive systems are its greatest strength. Lemmon's unusual procedure of presenting derivations before truth tables is very effective." --Sarah Stebbins, The Journal of Symbolic Logic

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We are a division of Goodwill Industries of the Columbia Willamette, headquartered in Portland, Oregon, U.S.A. When you buy from Goodwill Books not only will you feel happy about the money you save, you'll feel good knowing your purchase helps Goodwill provide vocational opportunities to people with barriers to employment. For more information please visit our website: www.goodwillbooks.com

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Goodwill Books
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Goodwill Books
2920 SW 234th Avenue
Hillsboro, OR 97123
503-649-7934
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