@book{66274,
	author = {Song, Yingxing,},
	title = {天工開物},
	publisher = {Project Gutenberg,},
	year = {2008},
	address = {Salt Lake City, UT :},
	note = {Wikipedia page about this book: https://en.wikipedia.org/wiki/Tiangong_Kaiwu},
	url = {https://www.gutenberg.org/ebooks/25273}
}