Subjects
- Submarine cables.1
- Swimming.1
- Table tennis.1
- Tableaux.1
- Telephone -- Defense measures.1
- Telephone -- Employees.1
- Telephone -- Equipment and supplies.1
- Telephone -- History.1
- Telephone cables.1
- Telephone directories.1
- Telephone etiquette.1
- Telephone lines.1
- Telephone operators.1
- Telephone repeaters.1
- Telephone switchboards.1
- Telephone switching systems, Electronic.1
- Telephone systems.1
- Telephone wire.1
- Telephone, Dial.1
- Telephones.1