Hancock, John C., 1929- An introduction to the principles of communication theory / by John C.Hancock - New York : McGraw-Hill, c1961. - x, 253 p. : ill. ; 24 cm. - McGraw-Hill electrical and electronic engineering series . Includes index and bibliography. ISBN: 0070993416 Subjects--Topical Terms: Telecommunication.Information theory. Dewey Class. No.: 621.38015 / HAI 1961