Gautam, A. k Communication systems [[Book] /] A. k .Gautam. - 3th ed . - New delhi : S.k.kataria & sons, 2008. - 295 p ; : ill ; 26 cm. Subjects--Topical Terms: Telecommunication. Subjects--Geographic Terms: Signal theory (Telecommunication). Dewey Class. No.: 621.382 National Library of Medicine Call No.: 621.382 / G C