21-seiki no "Hō no Kuni no kawazukuri" o mezashite
Subtitle: dai 9-ji chisui jigyō gokanen keikaku sakutei ni mukete
Publisher: Ōita-ken; Kensetsushō Kyūshū Chihō Kensetsukyoku Doboku Kenchikubu Kasenka, Sabōka
Published: 1996
Place of publication: Ōita-shi
Language: jpn
Number of pages: 78