1. Geology and resource assessment of the Venezuelan Guayana Shield at 1:500,000 scale : a digital representation of maps published by the U.S. Geological Survey Publication/Creation: Reston, VA. : U.S. Geological Survey, 1999 Resource Type: Map Access & Availability: Loading
2. Geologic map of the Galaxias quadrangle (MTM 35217) of Mars Author/Creator: Geological Survey (U.S.) Publication/Creation: Reston, VA : U.S. Dept. of the Interior, U.S. Geological Survey, 1999 Resource Type: Map Access & Availability: Loading
3. Geologic map of Ophir and central Candor Chasmata (MTM -05072) of Mars Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by USGS Information Services Resource Type: Map Access & Availability: Loading
4. Geologic map of the Barrymore quadrangle (V-59), Venus Author/Creator: Johnson, Jeffrey R., cartographer Publication/Creation: Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 1999 Resource Type: Map Access & Availability: Loading
5. Geologic map of the Dao, Harmakhis, and Reull Valles Region of Mars Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by USGS Information Services Resource Type: Map Access & Availability: Loading