Hokkaidō Tenpoku yu gasu-den chitai, Enbetsu, Utakoshibetsu haisha gasu-den chiiki tennen gasu shigen kaihatsu chōsa hōkoku
Subtitle: Shōwa 47-50-nendo.
Series: Chika Shigen Chōsajo chōsa hōkoku ; dai 9-gō
Publisher: Hokkaidōritsu Chika Shigen Chōsajo
Published: 1979
Place of publication: Sapporo
Language: jpn
Number of pages: 61