TY  - RPRT
TI  - Geologic map of MTM -15027, -20027, -25027, and -25032 quadrangles, Margaritifer Terra region of Mars
AU  - Rossman P. Irwin
AU  - John A. Grant
PY  - 2013
DO  - 10.3133/sim3209
UR  - https://pubs.usgs.gov/publication/sim3209
ID  - sim3209
ER  -