日本道路公団
Subtitle: shakkin 30-chōen no shinsō
By: NHK Hōdōkyoku "Dōro Kōdan" Shuzaihan
Series: NHK supesharu serekushon
Publisher: Nihon Hōsō Shuppan Kyōkai
Published: 2005
Place of publication: Tōkyō
Language: jpn
Number of pages: 219
Subjects: Highway planning; Nihon Dōro Kōdan
Other titles: Nihon Dōro Kōdan