@misc{indiciaedcb51d30b5f0, title = {Controlled photomosaic of the Elysium Northwest Quadrangle of Mars}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1981}, doi = {10.3133/i1386}, url = {https://pubs.usgs.gov/publication/i1386}, note = {Source identifier: i1386} }