Nijūnen no ayumi
Subtitle: sōritsu 20-shūnen kinen
By: [henshū Nihon Mokuzai Yunyū Kyōkai]
Publisher: Nihon Mokuzai Yunyū Kyōkai
Published: 1970
Place of publication: Tōkyō
Language: jpn
Number of pages: 283
Subjects: Lumber trade; History
Other titles: 20-nen no ayumi.