TY  - RPRT
TI  - Geologic Map of the Sif Mons Quadrangle (V-31), Venus
AU  - Duncan L. Copp
AU  - John E. Guest
PY  - 2007
DO  - 10.3133/sim2898
UR  - https://pubs.usgs.gov/publication/sim2898
ID  - sim2898
ER  -