Denki tsūshin keiei geppō

電氣通信経営月報

Responsibility
[henshū] Denki Tsūshinshō.
[編集]電氣通信省.
Imprint
Tōkyō : Denki Tsūshin Kyōkai, 1949-
東京 : 電気通信協会, 1949-
Physical description
v. : ill. ; 26 cm.

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Librarian view | Catkey: 6619804