@book{19,
	author = {Ash, Eric,},
	title = {Sir Frederick Sykes and the air revolution, 1912-1918 /},
	publisher = {Frank Cass,},
	year = {1999.},
	address = {London ;},
	url = {http://www.loc.gov/catdir/enhancements/fy0652/98022294-d.html}
}