Popular Science Monthly, v. 95, n. 3, 1919

Google Books

1919-09

Public domain (Google digitized)

Is Part Of
Title	Alternate label	Class
The improvements in wireless communication have decreased the use of pigeons
Mothering the Airplane with the Zeppelin. How the British launch airplanes from their giant dirigibles
A new ship designed with seaplane-landing facilities
How crystals could be used to measure gun explosions
A rifle range that everyone can build
Coast Defense Units Now Use Radio