Telephone development and the effect on the operating and technical staff. Report presented to the Xth Congress of the P.T.T.I., Brussels, 24-26 Ausgust 1939
Stencil.
| Institution: | International Institute of Social History |
|---|---|
| Format: | TEXT |
| Published: |
Postal, Telegraph and Telephone International,
n.d.
Berne : |
| Subjects: | |
| Online Access: | http://hdl.handle.net/10622/C5077F8D-4725-4292-B4D8-BDF5DD762940 |