Kōkū yūbin enkakushi
By: Yamaguchi Osamu ; [henshū Yūsei Daijin Kanbō Jinjibu Yōin Kunrenka].
Contributors: Japan. Yūseishō. Yōin Kunrenka.
Series: Yūsei jigyōshi ronshū -- dai 1-shū
Publisher: Gyōsei
Published: 1985
Place of publication: Tōkyō
Language: jpn
Number of pages: 145
Subjects: Air mail service -- Japan -- History.