Mason, C. Russell. The art and science of protective relaying / C. Russell. Mason. - New York, Wiley, c1956. - 410p. illus. 24cm. - General Electric series, written for the advancement of engineering practice . Includes index. English. LCCN: 56008964 Nat. Bib. No.: GB56-17364 Subjects--Topical Terms: Electric relays LC Class. No.: TK2861 / .M3 Dewey Class. No.: 621.317/MAA