@conference {,
	title = {New Perspectives on Obsidian Procurement in the Titicaca Basin, Bolivia},
	year = {1994},
	address = {Presented at the International Archaeology Symposium, Ankara, Turkey},
	keywords = {Sora Sora Bolivia Obsidian Tiwanaku},
	author = {Michael D. Glascock and Martin Giesso}
}