Title: Yatsugatake no sanmannen : kokuyōseki o otte /
Authors: Koizumi, Kesakatsu, 1918-
Publisher: Hōsei Daigaku Shuppankyoku,
Year: 1987
Subjects: Obsidian Japan Nagano-ken.; Quarries and quarrying Japan Nagano-ken.; Yatsu Mountains Region (Japan) Antiquities.; Japan Antiquities.; Nagano-ken (Japan) History.