Knight, S.A..
Telecommunication Principles for Final Certificate : Telecommunication Principles C. t. 2 / Knight S.A. - London : Butterworth, 1971. - 266 s.; 24 cm.
Telecommunication Principles for Final Certificate : Telecommunication Principles C. t. 2 / Knight S.A. - London : Butterworth, 1971. - 266 s.; 24 cm.