Smale, P.H..
Telecommunication Systems : I.A Textbook Covering the Level I Syllabus of the Technician Education Conucil / Smale P.H.. - London : Pitman, 1978. - 109 s.; 24 cm.
Telecommunication Systems : I.A Textbook Covering the Level I Syllabus of the Technician Education Conucil / Smale P.H.. - London : Pitman, 1978. - 109 s.; 24 cm.