HARDY (Darel W);RICHMAN (Fred);WALKER (Carol L) Applied algebra codes ciphers and discrete algorithms Ed 2 ROSEN (Kenneth H) Ed - 2 - New York CRC Press 2015 - 410 HB - Discrete mathematics and its applications . ISBN: 978-1-4200-7142-9 Subjects--Topical Terms: GeneralSystems Dewey Class. No.: 003.54 / HARA