@book{98790,
	author = {Valentini, Philipp J. J. and Pérez, Juan Pío,},
	title = {Mexican Copper Tools: The Use of Copper by the Mexicans Before the Conquest; and the Katunes of Maya History, a Chapter in the Early History of Central America, With Special Reference to the Pio Perez Manuscript.},
	publisher = {Project Gutenberg,},
	year = {2018},
	address = {Salt Lake City, UT :},
	note = {Release date is 2018-09-24},
	url = {https://www.gutenberg.org/ebooks/57961}
}