@book{56673,
	author = {Altsheler, Joseph A. and Wrenn, Charles L.},
	title = {The Hosts of the Air},
	publisher = {Project Gutenberg,},
	year = {2005},
	address = {Salt Lake City, UT :},
	note = {Sequel to The Guns of Europe (#33481) and The Forest of Swords (#15760).},
	url = {https://www.gutenberg.org/ebooks/15285}
}