TY  - BOOK
AU  - Heiken,Grant
AU  - Wohletz,Kenneth
TI  - Volcanic ash
SN  - 0520052412
PY  - 1985///
CY  - Berkeley, CA
PB  - Univ. of California Press
KW  - Volcanic ash, tuff, etc
KW  - Volcanoes
ER  -