%0 Report %D 1977 %T Trace Element Analysis of Obsidian Artifacts from the Andes: New perspectives on Pre-Hispanic economic interaction in Peru and Bolivia - LBL6343 %A Richard L. Burger %A Asaro, Frank %C Berkeley %I Lawrence Berkeley Laboratory %K Andes %Z by Richard Burger and Frank Asaro.Includes bibliographical references (p. 80-88).Andes Geog