TY  - RPRT
TI  - Geologic map of the north polar region of Mars
AU  - Kenneth L. Tanaka
AU  - Corey M. Fortezzo
PY  - 2012
DO  - 10.3133/sim3177
UR  - https://pubs.usgs.gov/publication/sim3177
ID  - sim3177
ER  -