References
- National Bureau of Standards Handbook 42: Safe Handling of Radioactive Isotopes. Superintendent of Documents . Sept . pp. 20 Washington 25, D.C.
- National Bureau of Standards Handbook 51: Radiological Monitoring Methods and Instruments. Superintendent of Documents . April . pp. 5 Washington 25, D.C.
- National Bureau of Standards Handbook 48: Control and Removal of Radioactive Contamination in Laboratories. Superintendent of Documents . Dec . pp. 19 Washington 25, D.C.
- National Bureau of Standards Handbook 52: Maximum Permissible Amounts of Radioisotopes in the Human Body and Maximum Permissible Concentrations in Air and Water. Superintendent of Documents . March . pp. 10 Washington 25, D.C.
- Reference 1, p. 11.
- Koval , G. 1945 . Determination of Particulate Airborne Long-lived Activity . June MDDC-1503, U. S. Atomic Energy Commission
- Reference 3, p. 31.
- Healy , J. W. 1952 . Measurement of Natural Radioactivity Background. . Nucleonics , 10 Oct : 14
- Koontz , R. L. and Nelson , C. R. 1958 . A Continuous Automatic Environmental Air Sampler. . Health Physics , 1 Sept : 192
- Holter , N. J. and Glasscock , W. R. 1952 . Tracing Nuclear Explosions. . Nucleonics , 10 Aug : 10