Keister, William, 1907- The design of switching circuits / by William Keister, Alistair E. Ritchie and Seth H. Washburn. - New York : Van Nostrand, [1951] Reprinted 1963 - 556 p. : ill. ; 24 cm. Subjects--Topical Terms: Electric switchgear. Dewey Class. No.: 621.3173 / KED 1963