Shizen chiiki toire shinyō shori gijutsu bun'ya
Publisher: Kankyōshō
Published: 2010
Place of publication: Tōkyō
Language: jpn
Number of pages: 26
Subjects: Purification; Sewage disposal plants; Sewage; Public toilets
Other titles: "Kankyō gijutsu jisshō jigyō" Heisei 21-nendo jisshō shiken kekka hōkokusho no gaiyō
Notes: Cover title.

"ETV Kankyōshō kankyō gijutsu jishō jigyō"