Dōro shindō ni kansuru chōsa hōkokusho
By: [henshū Tōkyō-to Kōgai Kenkyūjo Sōonbu]
Series: Kōgai Kenkyūjo shiryō -- 3-2-27
Publisher: Tōkyō-to Kōgai Kenkyūjo Sōonbu
Published: 1976
Place of publication: Tōkyō
Language: jpn
Number of pages: 111
Notes: Cover title.