@book{6381,
	author = {Saunders, Hilary Aidan St. George,},
	title = {Per ardua :},
	publisher = {Oxford University Press,},
	year = {1944},
	address = {London ;},
	note = {"This will, I hope, be the first volume of a short history of the Royal air force from its beginning as an air battalion in 1911 to its apotheosis in 19--? when this war ends."--Pref.}
}