Written by Major Georg Paul Neumann (Late of the German Air Force),1920 dated.Translated by J.E. Gurdon.
Some topics are; observation balloons, airships naval and military, army aeroplanes,naval aeroplanes, personnel and training.The German Air Force on the Western Front, fighting equipment.

From the Canadian Libraries Internet Archive files.

http://www.archive.org/details/germanairforcein00gurduoft

Joe