Piragaoka iseki--Akiyama dai 2 chiten--hakkutsu chōsa hōkokusho
Series: Shari-chō bunkazai hakkutsu chōsa hōkoku -- 9
Publisher: Shari-chō Kyōiku Iinkai
Published: 1997
Place of publication: Hokkaidō Shari-gun Shari-chō
Language: jpn
Number of pages: 72
Other titles: Piragaoka iseki hakkutsu chōsa hōkokusho