Natural gamma aeroradioactivity of parts of the Los Angeles region, California
By: by Kenneth G. Books.
Contributors: Books, Kenneth G.; U.S. Atomic Energy Commission. Division of Biology and Medicine.
Series: Geophysical investigations map -- GP-309.; Geophysical investigations (Geological Survey (U.S.)) -- GP-309.
Publisher: U.S. Geological Survey
Place of publication: Washington, D.C
Format: Map
Subjects: Radioactive fallout -- California -- Los Angeles Region -- Maps.; Radioactivity -- Measurement -- California -- Los Angeles Region -- Maps.
Genres: Maps.
Notes: 'Prepared in cooperation with the Division of Biology and Medicine, U.S. Atomic Energy Commission.'

Index map and text shown on sheet.