Nijūnen no ayumi
By: [henshū sekininsha Torii Tetsuya].
Contributors: Torii, Tetsuya, 1918-; Nihon Kyokuchi Kenkyū Shinkōkai.
Publisher: Nihon Kyokuchi Kenkyū Shinkōkai
Published: 1984
Place of publication: Tōkyō
Language: jpn
Number of pages: 56
Subjects: Nihon Kyokuchi Kenkyū Shinkōkai -- History.; Polar regions -- Discovery and exploration.; Antarctica -- Discovery and exploration.
Other titles: 20-nen no ayumi.