Berge, Claude The theory of graphs and its applications / Claude Berge. - 1st ed. - London : John Wiley & Sons, 1966 - x, 247 p. : ill. ; 22 cm. Includes bibliography and index. Subjects--Topical Terms: Graph theory.Set theory. LC Class. No.: QA611 / .B4253 Dewey Class. No.: 511.5 / BET