@book{103747,
	author = {Levy, Stanley Isaac},
	title = {The Rare Earths: Their Occurrence, Chemistry, and Technology},
	publisher = {Project Gutenberg,},
	year = {2020},
	address = {Salt Lake City, UT :},
	note = {Release date is 2020-08-13},
	url = {https://www.gutenberg.org/ebooks/62923}
}