@book{80149,
	author = {Bowditch, Charles P.},
	title = {On the Age of Maya Ruins},
	publisher = {Project Gutenberg,},
	year = {2012},
	address = {Salt Lake City, UT :},
	note = {Release date is 2012-03-30},
	url = {https://www.gutenberg.org/ebooks/39310}
}