{\rtf1\ansi\deff0\deftab360 {\fonttbl {\f0\fswiss\fcharset0 Arial} {\f1\froman\fcharset0 Times New Roman} {\f2\fswiss\fcharset0 Verdana} {\f3\froman\fcharset2 Symbol} } {\colortbl; \red0\green0\blue0; } {\info {\author Biblio}{\operator }{\title Biblio RTF Export}} \f1\fs24 \paperw11907\paperh16839 \pgncont\pgndec\pgnstarts1\pgnrestart Zeitlin, R. N., & Heimbuch R. C. (1978).\'a0\'a0Trace element analysis and the archaeoogical study of obsidian procurement in Precolumbian Mesoamerica. (Davis, D. D., Ed.).\ul Lithics and Subsistence: The analysis of stone tool use in prehistoric economies. 20,\ul0 \par \par }