Lipschutz, Seymour 2000 solved problems in discrete mathematics / by Seymour Lipschutz, Marc Lars Lipson. - New York : McGraw Hill, c1992. - iv, 404 p. : ill. ; 27 cm. - (Schaum's solve problems series) . Includes index. ISBN: 0070380317 Subjects--Topical Terms: Mathematics --Problems, exercises, etc. LC Class. No.: QA43 / .L541 1992