@misc{indiciae4da1b219db37, title = {Controlled photomosaic of the south polar area (MTM 90000: revised), Planum Australe region of Mars}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1991}, doi = {10.3133/i2269}, url = {https://pubs.usgs.gov/publication/i2269}, note = {Source identifier: i2269} }