@book{63871,
	author = {Smith, E. E. and Evans, E. Everett},
	title = {Masters of Space},
	publisher = {Project Gutenberg,},
	year = {2007},
	series = {Produced from Worlds of If November 1961 and January 1962.},
	address = {Salt Lake City, UT :},
	note = {Release date is 2007-09-24},
	url = {https://www.gutenberg.org/ebooks/22754}
}