@book{57963,
	author = {Playfair, William,},
	title = {An inquiry into the permanent causes of the decline and fall of powerful and wealthy nations},
	publisher = {Project Gutenberg,},
	year = {2005},
	address = {Salt Lake City, UT :},
	note = {Release date is 2005-08-21},
	url = {https://www.gutenberg.org/ebooks/16575}
}