@article {,
	title = {Obsidian production and the State of Teotihuacan},
	journal = {American antiquity},
	volume = {46},
	number = {4},
	year = {1981},
	note = {Source of data: Anthropological Literature, Harvard University},
	pages = {769-788},
	keywords = {Teotihuacan--Archaeology--Commerce, Teotihuacan--Archaeology--Economic organization, Teotihuacan--Archaeology--Obsidian},
	author = {Spence, Michael W.}
}