Author:Samuel Pierpont Langley

Samuel Pierpont Langley
Astronomer, astrophysicist, aeronautical experimenter
Samuel Pierpont Langley


Works about LangleyEdit


Works by this author published before January 1, 1926 are in the public domain worldwide because the author died at least 100 years ago. Translations or editions published later may be copyrighted. Posthumous works may be copyrighted based on how long they have been published in certain countries and areas.