Chiikikan jōhō kōryū no jittai haaku ni kansuru kenkyū chōsa hōkokusho
Publisher: Yūseishō Yūsei Kenkyūjo
Published: 1991
Place of publication: Tōkyō]
Language: jpn
Number of pages: 45
Subjects: Telecommunication; Tsūshin
Notes: Title from cover.