Pfeiffer, Paul E. Sets, events, and switching/ Paul E. Pfeiffe. - New York: McGraw-Hill, [1964]. - xiii, 131 p.: illus., 21 cm. Bibliography: p. 119-120. LCCN: 63023462 //r83 Nat. Bib. No.: GB64-16864 Subjects--Topical Terms: Algebra, Boolean.Switching theory Dewey Class. No.: 511.322 / P527s