USGS IMAP 1962: Geologic maps of science study site 1A, East Mangala Valles, Mars
By M. G. Chapman, H. Masursky, and A. L. Dial Jr.
Map and associated documents available from the USGS Publications Warehouse: https://doi.org/10.3133/i1962
Inset of USGS IMAP 1962: Geologic maps of science study site 1A, East Mangala Valles, Mars
By M. G. Chapman, H. Masursky, and A. L. Dial Jr.
Map and associated documents available from the USGS Publications Warehouse: https://doi.org/10.3133/i1962
Public Domain.