TY  - BOOK
AU  - Heiken,Grant
TI  - An atlas of volcanic ash
T2  - Smithsonian contributions to the earth sciences
AV  - QE1QE461 .S227 no. 12
U1  - 552/.2 
PY  - 1974///
CY  - Washington
PB  - Smithsonian Institution Press; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.]
KW  - Volcanic ash, tuff, etc
KW  - Local
N1  - 921004; Bibliography: p. 13-14
ER  -