@book{107839,
	author = {De Morgan, Augustus,},
	title = {First notions of logic (preparatory to the study of geometry)},
	publisher = {Project Gutenberg,},
	year = {2021},
	address = {Salt Lake City, UT :},
	note = {Release date is 2021-12-26},
	url = {https://archive.org/details/firstnotionsoflo00demoiala}
}