@book{84630,
	author = {Ostwald, Wilhelm, and Seltzer, Thomas,},
	title = {Natural Philosophy},
	publisher = {Project Gutenberg,},
	year = {2013},
	address = {Salt Lake City, UT :},
	note = {Release date is 2013-09-22},
	url = {https://www.gutenberg.org/ebooks/43791}
}