Chiikikan jōhō kōryū no jittai haaku ni kansuru kenkyū chōsa hōkokusho
Publisher: Yūseishō Yūsei Kenkyūjo
Published: 1990
Place of publication: [Tōkyō]
Language: jpn
Number of pages: 450
Subjects: Telecommunication
Notes: "1990-IV-91."

Title from cover.