Telephoning /
Telephoning.
Telephone skills. : Essential telephone English. /
Telephoning in English /
Telephoning in English Audio CD 1 /
Telephoning in English Audio CD 2 /
Computers and electronics.
Essential telephoning in English : teacher´s book /
Essential telephoning in English : student´s book /
The Internet telephone toolkit. /
Essential telephoning in English.: student´s book.
Electronic and computer music. /
The Internet telephone toolkit.
Telephoning in English.: cassette 1.
Telephone English / includes phrase bank and role plays /
Computer-aided design of electronic circuits.
Switching.
Switch
Switches
Electronics, computers and telephone switching : a book of technological history. Volume 2, 1960-1985 of "100 years of telephone switching" /