TY  - RPRT
TI  - Geologic map of the Mare Acidalium Quadrangle (including the potential Viking landing site Cydonia)
AU  - J.R. Underwood
AU  - N.J. Trask
PY  - 1978
DO  - 10.3133/i1048
UR  - https://pubs.usgs.gov/publication/i1048
ID  - i1048
ER  -