Pitkin, James A. 1931-
Airborne measurements of Terrestrial radioactivity as an aid to geologic mapping / by James A. Pitkin. -- Washington : United States Government Printing Office, 1968 - 29 p. -- (Geological Survey Professional Paper ; 516-F).
Geofísica
550.3
Airborne measurements of Terrestrial radioactivity as an aid to geologic mapping / by James A. Pitkin. -- Washington : United States Government Printing Office, 1968 - 29 p. -- (Geological Survey Professional Paper ; 516-F).
Geofísica
550.3