1. Harley Hahn's Emacs Field Guide
Science -- Mathematics -- Instruments and machines
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2. Do-it-yourself Advertising and Promotion: How to Produce Great Ads, Brochures, Catalogs, Direct Mail, Web Sites, and More! / Fred E. Hahn ; With Tom Davis, Bob Killian, and Ken Magill
978-0-471-27350-9;
Social Sciences -- Commerce -- Business
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