Aberrations of Audibility of Fog-signals: A Paper Read Before the Philosophical Society of Washington, October 22, 1881![]() U.S. Government Printing Office, 1885 - 16 pages |
Aberrations of Audibility of Fog-signals: A Paper Read Before the Philosophical Society of Washington, October 22, 1881![]() U.S. Government Printing Office, 1885 - 16 pages |