@book{117232,
	author = {Babbage, Charles, and De Morgan, Augustus,},
	title = {The exposition of 1851},
	publisher = {Project Gutenberg,},
	year = {2025},
	address = {Salt Lake City, UT :},
	note = {Release date is 2025-07-15},
	url = {https://archive.org/details/b21495336}
}