@book{74070,
	author = {Lyell, Charles, Sir,},
	title = {Principles of Geology :},
	publisher = {Project Gutenberg,},
	year = {2010},
	address = {Salt Lake City, UT :},
	note = {Wikipedia page about this book: https://en.wikipedia.org/wiki/Principles_of_Geology},
	url = {https://www.gutenberg.org/ebooks/33224}
}