Exner, George R. An accompaniment to higher mathematics - New York: Springer, 1996 - xvii, 198 p.: il. - Undergraduate texts in mathematics . Incluye apendices p. 190-191 ISBN: 0387946179 Subjects--Topical Terms: LOGICA SIMBOLICA Y MATEMATICATEORIA DE GRAFOS Dewey Class. No.: 511.3 / E96