[東海電気通信局][1966]<YG12-Z-5236>
National Diet Library
- NDC 9th694.2152 694.2153 694.2155
[信越電気通信局][1966]<YG12-Z-12789>
National Diet Library
[信越電気通信局][1965]<YG12-Z-5143>
National Diet Library
- NDC 9th694.2141 694.2142 694.2152
[信越電気通信局][1963]<YG12-Z-5213>
National Diet Library
[信越電気通信局][1964]<YG12-Z-5173>
National Diet Library
[信越電気通信局][1965]<YG12-Z-4976>
National Diet Library
[信越電気通信局][1965]<YG12-Z-4974>
National Diet Library
[信越電気通信局][1964]<YG13-Z-505>
National Diet Library
[信越電気通信局][1964]<YG12-Z-5171>
National Diet Library
[東海電気通信局][1963]<YG12-Z-5222>
National Diet Library
[信越電気通信局][1962]<YG12-Z-5026>
National Diet Library
[信越電気通信局][1963]<YG12-Z-5020>
National Diet Library
[信越電気通信局][1964]<YG12-Z-4993>
National Diet Library
[信越電気通信局][1964]<YG12-Z-5011>
National Diet Library
[信越電気通信局][1964]<YG12-Z-4995>
National Diet Library
[関東電気通信局][1962]<YG12-Z-5003>
National Diet Library
[信越電気通信局][1963]<YG12-Z-5226>
National Diet Library
[信越電気通信局][1961]<YG12-Z-5145>
National Diet Library
[関東電気通信局][1962]<YG12-Z-5023>
National Diet Library
[信越電気通信局][1963]<YG12-Z-5224>
National Diet Library