TY  - RPRT
TI  - Mazama ash in the Northeastern Pacific
AU  - C.H. Nelson
AU  - L.D. Kulm
AU  - P.R. Carlson
AU  - J. R. Duncan
PY  - 1968
DO  - 10.1126/science.161.3836.47
UR  - https://pubs.usgs.gov/publication/70011470
ID  - 70011470
ER  -