Tonneru Kensetsu Kōji ni Okeru Kojin Bakuro Nōdo Sokutei tō Suishin Jigyō Kentō Iinkai hōkokusho
Contributors: Nihon Sagyō Kankyō Sokutei Kyōkai
Publisher: Nihon Sagyō Kankyō Sokutei Kyōkai
Published: 2010
Place of publication: Tōkyō
Language: jpn
Number of pages: 84
Subjects: Air; Safety measures; Tunneling; Pollution; Measurement
Notes: Cover title.

"Heisei 21-nendo Kōsei Rōdōshō itaku jigyō"