@book{104608,
	author = {Ingalls, Walter Renton,},
	title = {Lead Smelting and Refining, With Some Notes on Lead Mining},
	publisher = {Project Gutenberg,},
	year = {2020},
	address = {Salt Lake City, UT :},
	note = {Release date is 2020-11-16},
	url = {https://www.gutenberg.org/ebooks/63784}
}