Electronic Communication /
Shrader, Robert L.
Electronic Communication / Robert L. Shrader. - New York : McGraw-Hill Book Company, 1980. - 801 s. : il. ; 24 cm.
621.38/.39
Electronic Communication / Robert L. Shrader. - New York : McGraw-Hill Book Company, 1980. - 801 s. : il. ; 24 cm.
621.38/.39