@inbook {,
	title = {Formative obsidian exchange and the emergence of public economies in Chiapas, Mexico},
	booktitle = {Trade and exchange in early Mesoamerica. },
	year = {1984},
	note = {Source of data: Anthropological Literature, Harvard University},
	pages = {235-274},
	publisher = {University of New Mexico Press, 1984},
	organization = {University of New Mexico Press, 1984},
	address = {Albuquerque},
	keywords = {Maya--Archaeology--Obsidian, Mexico--Chiapas--Archaeology--Commerce, Mexico--Chiapas--Archaeology--Obsidian},
	author = {Clark, John E. and Lee, Thomas A.},
	editor = {Hirth, Kenneth G.}
}