RT Book, Whole DB /z-wcorg/ DS http://worldcat.org ID 8951406 LA English T1 Radioactivity of part of the bituminous coal region of Pennsylvania A1 Patterson, E. D., Geological Survey (U.S.), U.S. Atomic Energy Commission., Technical Information Service., PB The Survey : Available from the Office of Technical Services, Dept. of Commerce PP Washington, D.C. YR 1954