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9780669342260
Benjamin N. Levy is the author of 'Graphing Technology Guide (for use with TI-81, TI-82, TI-85, Casio fx-7700G, Sharp EL 9200-9300, Hewlett-Packard 48G-48GX, BestGrapher Software (IBM), Best Grapher Software (Macintosh)', published 1993 under ISBN 9780669342260 and ISBN 0669342262.
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