@book{49688,
	author = {Guan, Zengjian,},
	title = {Kao Gong Ji: A Translation and Commentary :},
	publisher = {BRILL,},
	year = {2020.},
	series = {Technology and Change in History ;},
	address = {Leiden; },
	url = {http://dx.doi.org/10.1163/9789004416949}
}