Aeroradioactivity survey and areal geology of the Pittsburgh area, Pennsylvania, Ohio, West Virginia, and Maryland (ARMS-I). CEX-59. 4. 12.
D055593:Geological Phenomena; D005844:Geology; D008396:Maryland; D009820:Ohio; D010414:Pennsylvania; D011834:Radiation Monitoring; D011847:Radioactive Fallout; D011851:Radioactivity; D014903:West Virginia
D011847:Radioactive Fallout