Lovász, László, 1948- Combinatorial problems and exercises / by L. Lovász. - Amsterdam ; New York ; New York : North-Holland Pub. Co. ; Elsevier North-Holland, sole distributors for the U.S.A. and Canada, 1979. - 551 p. : ill. ; 25 cm. Includes bibliographical references and indexes. ISBN: 0444852190 Subjects--Topical Terms: Combinatorial analysis--Problems, exercises, etc.