Principles underlying the use of balloons. Issued by the Division of military aeronautics, U. S. Army. A summary of the instructions given by Commandant Soconney [!] at his school at Vadenay. - Washington, Govt. print. off., 1918. - 20 p. 20 cm.

war21000059


Aeronautics, Military--United States.
Balloons.
Balloons and ballooning, Military.

UG640 / .U6