@book{71253,
	author = {Prus, Bolesław,},
	title = {O odkryciach i wynalazkach :},
	publisher = {Project Gutenberg,},
	year = {2009},
	address = {Salt Lake City, UT :},
	note = {Release date is 2009-11-05},
	url = {https://www.gutenberg.org/ebooks/30407}
}