@misc{indiciaec512c10ffa43, title = {Shaded relief and surface markings of the Vruk Sulcus Quadrangle of Ganymede (sheet 1); airbrush base for Vruk Sulcus Quadrangle of Ganymede (sheet 2)}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {1984}, doi = {10.3133/i1536}, url = {https://pubs.usgs.gov/publication/i1536}, note = {Source identifier: i1536} }