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Discrete-Time Signal Processing by Alan Oppenheim, Hardback 1989 Edition

Discrete Mathematics Through Applications, Third Edition

Discrete mathematics and its applications seventh edition Kenneth H. Rosen

Discrete Mathematics and Its Applications Instructor Resource Guide - VERY GOOD

Discrete Mathematics Through Applications (3rd Edition) by Nancy Crisler

Schaum's Outline Series Discrete Mathematics Vintage copy

Discrete Mathematics With Applications by Susanna S Epp