Geologic map of the western equatorial region of Mars / Department of the Interior, U.S. Geological Survey ; by David H. Scott and Kenneth L. Tanaka ; prepared for the National Aeronautics and Space Administration
Atlas of Mars, 1:15,000,000 geologic series Miscellaneous investigations series ; map I-1802-A Geological Survey (U.S.). Atlas of Mars. 1:15,000,000 geologic series. Miscellaneous investigations series (Geological Survey (U.S.)) ; map I-1802-A.
1 map : color ; 55 x 71 cm, on sheet 101 x 137 cm, folded in envelope 30 x 24 cm.
Coordinates shown as W 180°--W 0°/N 57°--S -57°. "Prepared on behalf of the Planetary Geology and Geophysics Program, Planetary Division, Office of Space Science and Applications, National Aeronautics and Space Administration, under contract W-15,814."