Denwa ryōkin no enkaku /
Nihon Denshin Denwa Kōsha.
電話料金の沿革
APA Citation
Nihon Denshin Denwa Kōsha., 日本電信電話公社. (1956). Denwa ryōkin no enkaku. [Tōkyō]: [Nihon Denshin Denwa Kōsha].
MLA Citation
Nihon Denshin Denwa Kōsha, and 日本電信電話公社. Denwa Ryōkin No Enkaku. [Tōkyō]: [Nihon Denshin Denwa Kōsha], 1956.
Warning: These citations may not always be complete (especially for serials).