Denwa jigyō ni tsuite no yoron chōsa
Subtitle: [Public opinion poll on the telephone industry and service] / by Nihon Denshin Denwa Kōsha and Kokuritsu Yoron Chōsajo
Contributors: Kokuritsu Yoron Chōsajo
Series: Yoron chōsa hōkoku-sho -- no. 50; Seron chōsa hōkokusho -- no. 50.
Published: 1952
Place of publication: [Tōkyō]
Language: jpn
Number of pages: 46
Subjects: Telephone; Public opinion
Notes: Cover title.