1. International Atomic Energy Agency Directory of Whole Body Counters (1964).
2. Agric. Res. Coun., Ann. Rep. ARCRL–12 (1964).
3. Miller, C. E., and Marinelli, L. D., Argonne Nat. Lab. Rep., ANL–5518 (1956).
4. Rundo, J., and Newton, D., Nature, 203 537 (1964).
5. Hesp, R., Symp. Assessment of Radioactive Burdens in Man, Heidelberg (1964).