1. Measurements on the background atmospheric 222Rn and 220Rn concentrations in Qena desert;Ahmed,1992
2. Medical Hypothesis;Axellsson;Room for a Role for Radon in Lung Cancer Causation,1984
3. Instrumentation for environmental monitoring;Bunditz,1983
4. Medical Dissertations;Edling,1983
5. M.Sc. Thesis;El-Araby,1991