Description: Maps of three segments in the Camden-Delaware Valley area surveyed as part of a radiological survey, outlining "Radioactivity levels in hundreds of counts per second normalized to 500 ft above ground." Scale 1:250,000.
Date: November 10, 1961
Creator: Edgerton, Germeshausen & Grier
Item Type: Refine your search to only Map
Partner: UNT Libraries Government Documents Department