pteham ned aici on HASL-195 HEALTH AND SAFETY (T1D-4500) THE RADIATION FIELD IN AIR DUE TO DISTRIBUTED GAMMA-RAY SOURCES IN THE GROUND H. Beck G. de Planque May 1968 Health and Safety Laboratory U. S. Atomic Energy Commission New York, New York a
pteham ned aici on HASL-195 HEALTH AND SAFETY (T1D-4500) THE RADIATION FIELD IN AIR DUE TO DISTRIBUTED GAMMA-RAY SOURCES IN THE GROUND H. Beck G. de Planque May 1968 Health and Safety Laboratory U. S. Atomic Energy Commission New York, New York a