@book{106598,
	author = {Collinson, Charles William, and Skartvedt, Romayne,},
	title = {Field Book: Pennsylvanian Plant Fossils of Illinois},
	publisher = {Project Gutenberg,},
	year = {2021},
	series = {Illinois. State Geological Survey. Educational series, 6.},
	address = {Salt Lake City, UT :},
	note = {Release date is 2021-07-06},
	url = {https://www.gutenberg.org/ebooks/65776}
}