@book{71870,
	author = {Multhauf, Robert P.,},
	title = {Mine Pumping in Agricola's Time and Later},
	publisher = {Project Gutenberg,},
	year = {2010},
	address = {Salt Lake City, UT :},
	note = {Release date is 2010-01-20},
	url = {https://www.gutenberg.org/ebooks/31024}
}