3811913

A Study of Multioffice Automatic Switchboard Telephone Systems

W. Lee Campbell

1

1908

503

541

"Telephony","Costs","Wire","Central office","Cities and towns","Communication cables","Power generation economics","Data engineering","Velocity measurement","Soil"

Transactions of the American Institute of Electrical Engineers

ieee

0096-3860

jour

10.1109/T-AIEE.1908.4768072

4768072