TY  - BOOK
AU  - Sharer Robert J Ed
TI  - Prehistory of Chalchuapa El Salvador
U1  - V753.9M:71.C, L8.1-.3 
PY  - 1978///
CY  - Pennsylvania
PB  - University of Pennsylvania Press    
KW  - HISTORY
N1  - Bibliography p218-220
ER  -