@book{97134,
	author = {United States. National Park Service},
	title = {Agate Fossil Beds National Monument, Nebraska},
	publisher = {Project Gutenberg,},
	year = {2018},
	address = {Salt Lake City, UT :},
	note = {Wikipedia page about this book: https://en.wikipedia.org/wiki/Agate_Fossil_Beds_National_Monument},
	url = {https://www.gutenberg.org/ebooks/56303}
}