TY  - RPRT
TI  - Shaded relief map of the lunar polar regions
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1981
DO  - 10.3133/i1326a
UR  - https://pubs.usgs.gov/publication/i1326A
ID  - i1326A
ER  -