USGS IMAP 1640: Geologic map of the Mare Boreum area of Mars
1984 (approx.)

Detailed Description
USGS IMAP 1640: Geologic map of the Mare Boreum area of Mars
By A. L. Dial Jr.
Map and associated documents available from the USGS Publications Warehouse: https://doi.org/10.3133/i1640
Sources/Usage
Public Domain.