@book{60453,
	author = {Piper, H. Beam,},
	title = {Police Operation},
	publisher = {Project Gutenberg,},
	year = {2006},
	series = {Produced from Astounding Science Fiction, July 1948.},
	address = {Salt Lake City, UT :},
	note = {Release date is 2006-08-16},
	url = {https://www.gutenberg.org/ebooks/19067}
}