Hokkaidō ni okeru chōrui no chiikibetsu seisoku jōkyō
By: [henshū, Hokkaidō Seikatsu Kankyōbu Shizen Hogoka].
Series: "Hokkaidō shizen hogo keikaku" sakutei shiryō ; no. 7
Publisher: Dō Ka
Published: 1981
Place of publication: Sapporo
Language: jpn
Number of pages: 103