@book{79494,
	author = {Roscher, Wilhelm, and Lalor, John J.},
	title = {Principles of Political Economy, Vol. 2},
	publisher = {Project Gutenberg,},
	year = {2012},
	address = {Salt Lake City, UT :},
	note = {Translation of System der volkswirthschaft.},
	url = {https://www.gutenberg.org/ebooks/38655}
}