21世紀への階段
Subtitle: Dai 1-bu
By: Kagaku Gijutsuchō kanshū
Publisher: Kōbundō
Published: 1960
Place of publication: Tōkyō
Language: jpn
Number of pages: 280
Subjects: Technology; Science
Other titles: 21-seiki e no kaidan; Nijūisseiki e no kaidan