@book{71227,
	author = {Haseltine, Robert W. and Terry, W. E.,},
	title = {Prelude to Space},
	publisher = {Project Gutenberg,},
	year = {2009},
	series = {Produced from Imagination May 1954.},
	address = {Salt Lake City, UT :},
	note = {Release date is 2009-11-01},
	url = {https://www.gutenberg.org/ebooks/30381}
}