TY  - BOOK
AU  - Sheets,Payson D.
AU  - Grayson,Donald K.
TI  - Volcanic activity and human ecology
SN  - 0-12-639120-3
AV  - GF58 V65
PY  - 1979///
CY  - San Francisco, Calif.
PB  - Academic
N1  - Incluye bibliografia
ER  -