... Theory of ballooning.
Subtitle: A course of six lectures on the theory of ballooning, delivered before officers of the Royal air force station, Roehampton.  Obtained from practice.
By: By Griffith Brewer ...
Edition: 8th ed., Oct. 1918.
Publisher: Printed by Taylor and Francis
Published: 1919
Place of publication: [London
Language: eng
Subjects: Balloons.
Notes: At head of title:  (Not to be communicated to anyone outside the Royal air force.)
Contains 5 lectures only and "Questions" (6 p. at end)  Each lecture has special t-p and separate paging.
"4th lecture," 7th ed., Aug 1918.