Kaisha kenkyū NTT
Subtitle: sūji de miru jitsuryoku
By: Sasaki Shūichi.
Edition: 1-han
Publisher: Nihon Keizai Shinbunsha
Published: 1986
Place of publication: Tōkyō
Language: jpn
Number of pages: 229
Subjects: Nihon Denshin Denwa Kabushiki Kaisha.