1. 100 years of telephone switching )1878-1978(
Author: Chapuis, Robert J.
Library: Central Library of Sharif University of Technology (Tehran)
Subject: ، Telephone stations-- History
Classification :
TK
6211
.
C46
1982
2. 100 years of telephone switching )1878- 1978(
Author: Chapuis, Robert J.
Library: Library of Niroo Research Institue (Tehran)
Subject: ، Telephone stations- History
Classification :
TK
6211
.
C46
1982
