@book{74216,
	author = {Boys, C. V.},
	title = {Soap-Bubbles and the Forces Which Mould Them},
	publisher = {Project Gutenberg,},
	year = {2010},
	address = {Salt Lake City, UT :},
	note = {Release date is 2010-08-07},
	url = {https://www.gutenberg.org/ebooks/33370}
}