Doctor Langley's paradox
Subtitle: two letters suggesting the development of rockets.
Series: Smithsonian miscellaneous collections,; v. 140, no. 3
Publisher: Smithsonian Institution
Published: 1960
Place of publication: Washington
Language: eng
Subjects: Langley, S. P. 1834-1906.; Airplanes -- History.; Rockets (Aeronautics).
Notes: Smithsonian Institution. Publication 4424.