| 1. | Telephony : a detailed exposition of the telephone system of the British Post Office / T. E. Herbert; W. S. ProcterAutor: Herbert, T. E. Data Publicação: 1946 |  | |
| 2. | Telephony : a detailed exposition of the telephone system of the British Post Office / T. E. Herbert; W. S. ProcterAutor: Herbert, T. E. Data Publicação: 1946 | | |
| 3. | Telephony : a detailed exposition of the telephone system of the British Post Office / T. E. Herbert; W. S. ProcterAutor: Herbert, T. E. Data Publicação: 1934-1941 | | |
| 4. | Telephony : a detailed exposition of the telephone system of the British Post Office / T. E. Herbert; W. S. ProcterAutor: Herbert, T. E. Data Publicação: 1934-1941 | | |
| 5. | Telegraphy : A detailed exposition of the telegraph system of the british post office / T. E. HerbertAutor: Herbert, T. E.; E.E., A.M. Inst Data Publicação: 1907 | | |