TY  - SER
AU  - Braswell, Geoffrey E.
TI  - Interpreting intrasource variation in the composition of obsidian : : The geoarchaeology of san martin jilotepeque, Guatemala
T2  - Latin American Antiquity ; 
PY  - 1998///
CY  - Washington, DC-US : 
PB  - Society for American Archaeology, 
N1  - Articulo dentro de reports
ER  -