@article {,
	title = {Lithic Provenience Analysis and Emerging Material Complexity at Formative Period Chiripa, Bolivia},
	journal = {Andean Past},
	volume = {5},
	year = {1998},
	pages = {301-324},
	keywords = {obsidian western slope andes archaeology andes exchange},
	author = {Browman, David L.}
}