TY  - BOOK
AU  - Williams,Howel
TI  - Volcanic history of the Meseta Central Occidental, Costarica
AV  - PAM QE524.W52 
PY  - 1955///
CY  - Berkeley
PB  - University of California Press
KW  - Volcanoes
KW  - Salvador
KW  - Geology
KW  - Petrology
ER  -