TY  - RPRT
TI  - Crater Lake: blue through time
AU  - Gary L. Larson
AU  - Mark Buktenica
AU  - Robert Collier
PY  - 2003
DO  - 10.3133/fs01803
UR  - https://pubs.usgs.gov/publication/fs01803
ID  - fs01803
ER  -