National Geologic Map Database
General Information
- Title: Natural gamma aeroradioactivity map of Bel Air and vicinity, Harford, Baltimore, and Cecil Counties, Maryland
- Author(s): Bromery, R.W., Petty, A.J., and Gilbert, F.P.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Geophysical Investigations Map GP-484
- Publication Date: 1964
- Map Scale: 1:62,500
- Cross Section: None
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