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- catalog contributor b7939926.
- catalog contributor b7939927.
- catalog contributor b7939928.
- catalog coverage "Potomac River Valley Maps.".
- catalog created "1965.".
- catalog date "1965".
- catalog date "1965.".
- catalog dateCopyrighted "1965.".
- catalog extent "1 map :".
- catalog isPartOf "Geophysical investigations (Geological Survey (U.S.)) ; map GP-475.".
- catalog isPartOf "Geophysical investigations ; GP-475".
- catalog issued "1965".
- catalog issued "1965.".
- catalog language "eng".
- catalog publisher "Washington, D.C. : U.S. Geological Survey,".
- catalog spatial "Potomac River Valley Maps.".
- catalog spatial "Potomac River Valley".
- catalog spatial "Scale 1:250,000 (W 78⁰--W 76⁰15ʹ/N 39⁰25ʹ--N 37⁰55ʹ)".
- catalog spatial "a 250000 W0780000 W0761500 N0392500 N0375500".
- catalog subject "Atmospheric radioactivity Potomac River Valley Maps.".
- catalog subject "Geology Potomac River Valley Maps.".
- catalog title "Natural gamma aeroradioactivity of the District of Columbia and parts of Maryland, Virginia, and West Virginia map / by Sherman K. Neuschel.".
- catalog type "image".