TY - GEN A2 - Scott, David Holcomb, 1916- A2 - Chapman, Mary G. A2 - United States. National Aeronautics and Space Administration A2 - Planetary Geology Program (U.S.) AU - Geological Survey (U.S.) CN - I 19.91:I-2084 CY - Reston, Va. CY - Denver, CO LA - English PB - [The Survey, For sale by Map Distribution] PP - Reston, Va. PP - Denver, CO PY - 1991 TI - Geologic map of science study area 6, Memnonia Region of Mars (MTM -10172) ER -