Tokutei kōshō kaihatsu sokushin chōsa shiryō
Subtitle: Haboro chiiki
Series: Hokkaidō kaihatsu keikaku chōsa
Publisher: Hokkaidō Kaihatsu Kyokuchō Kanbō Kaihatsu Chōsaka
Published: 1983
Place of publication: [Sapporo-shi]
Language: jpn
Number of pages: 48
Subjects: Bentonite deposits; Bentonite industry; Prospecting; Economic geography
Notes: Cover title.

Bibliography: p. 26.