Pierce, John Robinson, 1910- Symbols, signals, and noise : the nature and process of communica tion / by J. R. Pierce. - 1st ed. - New York : Harper, 1961. - 305 p. : ill. ; 22 cm. - Harper modern science series . LCCN: 61-010215 Subjects--Topical Terms: Information theory. Dewey Class. No.: 006 PIE