@book{55400,
	author = {Browne, G. F.},
	title = {Ice-Caves of France and Switzerland},
	publisher = {Project Gutenberg,},
	year = {2004},
	address = {Salt Lake City, UT :},
	note = {Release date is 2004-11-10},
	url = {https://www.gutenberg.org/ebooks/14012}
}