@book{89440,
	author = {Heuchler, Eduard,},
	title = {Album für Freunde des Bergbaues, :},
	publisher = {Project Gutenberg,},
	year = {2015},
	address = {Salt Lake City, UT :},
	note = {Release date is 2015-03-29},
	url = {https://www.gutenberg.org/ebooks/48601}
}