@book{106249,
	author = {Lamar, J. E.},
	title = {Industrial Minerals and Metals of Illinois},
	publisher = {Project Gutenberg,},
	year = {2021},
	series = {Illinois State Geological Survey. Educational series, 8},
	address = {Salt Lake City, UT :},
	note = {Release date is 2021-05-23},
	url = {https://www.gutenberg.org/ebooks/65426}
}