Modern communications switching systems
Hobbs, Marvin
Modern communications switching systems - 2nd ed - Blue Ridge Summit Tab Books, 1981 - 308 p. 20 cm - .
0-8306-9635-00
Telephone, Automatic
Telephone switching systems, Electronic
Electric switchgear
621.395.65 Hob
Modern communications switching systems - 2nd ed - Blue Ridge Summit Tab Books, 1981 - 308 p. 20 cm - .
0-8306-9635-00
Telephone, Automatic
Telephone switching systems, Electronic
Electric switchgear
621.395.65 Hob