@misc{indiciae6f136f27d5f2, title = {Shaded relief and surface markings of the Namtar Quadrangle; Ganymede}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1988}, doi = {10.3133/i1871}, url = {https://pubs.usgs.gov/publication/i1871}, note = {Source identifier: i1871} }