TY  - RPRT
TI  - Hadley-Apennine site shaded relief map
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1971
DO  - 10.3133/ofr71304
UR  - https://pubs.usgs.gov/publication/ofr71304
ID  - ofr71304
ER  -