TY  - RPRT
TI  - Index map of 1:50,000-scale mosaics, WSA photography 1955-1957, Kingdom of Saudi Arabia
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1980
DO  - 10.3133/ofr801305
UR  - https://pubs.usgs.gov/publication/ofr801305
ID  - ofr801305
ER  -