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FISSION PRODUCT RADIOACTIVITY IN THE AIR ALONG THE 80TH MERIDIAN (WEST) DURING 1959
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CONCENTRATIONS OF RADIOACTIVE MATERIALS IN THE AIR DURING 1957
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LOCKHART LB, 1960, 5440 US NAV RES LAB
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THE EFFECT OF METEOROLOGICAL VARIABLES UPON THE VERTICAL AND TEMPORAL DISTRIBUTIONS OF ATMOSPHERIC RADON
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DAILY AND ANNUAL COURSES OF NATURAL ATMOSPHERIC RADIOACTIVITY
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