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2. Aerosols residence time calculations using Bismuth-210/Lead-210 activity ratios of atmospheric particulates;Anand,1988
3. Examining accumulation-mode aerosol behaviour using natural and Chernobyl-derived radionuclides;Bondietti,1987
4. Use of long-lived natural radioactivity as an atmospheric tracer;Burton;Nature,1960
5. Radioactive fallout in air and rain. Results to the middle of 1970;Cambray,1970