%0 Journal Article %J Latin American Antiquity %D 2000 %T Determining the Geological Provenance of Obsidian Artifacts from the Maya Region: A test of the efficacy of visual sourcing %A Braswell, Geoffrey E. %A Clark, John E. %A Aoyama, Kazuo %A McKillop, Heather I. %A Michael D. Glascock %P 269-282 %V 11