@book{110174,
	author = {Turck, J. A. V.},
	title = {Origin of modern calculating machines},
	publisher = {Project Gutenberg,},
	year = {2022},
	address = {Salt Lake City, UT :},
	note = {Release date is 2022-11-19},
	url = {https://archive.org/details/originofmodernca00turcrich}
}