@book{70223,
	author = {Luhr, Otto, and Friedl, Herman},
	title = {Manufacturing Cost Data on Artificial Ice},
	publisher = {Project Gutenberg,},
	year = {2009},
	address = {Salt Lake City, UT :},
	note = {Release date is 2009-07-11},
	url = {https://www.gutenberg.org/ebooks/29375}
}