"Nahotoka Gō" jūyu ryūshutsu jiko ni kakawaru enganʼiki kankyō eikyō chōsa hōkokusho
Subtitle: Heisei 8-nendo
Series: Shinsui Kaiken shiryō -- 97-2
Publisher: Niigata-ken Suisan Kaiyō Kenkyūjo
Published: 1997
Place of publication: [Niigata-shi?]
Language: jpn
Number of pages: 160