- OECD Nuclear Energy Agency (13)
- International Atomic Energy Agency (5)
- Specialist Meeting on Personal Dosimetry and Area Monitoring Suitable for Radon and Daughter Products (2)
- Commission of the European Communities (1)
- European Company for the Chemical Processing of Irradiated Fuels (1)
- France. Commissariat à l'énergie atomique (1)
- International Conference on Neutron Physics and Nuclear Data for Reactors and Other Applied Purposes (1)
- NEA Seminar on the Storage of Spent Fuel Elements (1)
- Seminar on In Situ Heating Experiments in Geological Formations (1)
- Seminar on the Bituminization of Low and Medium Level Radioactive Wastes (1)
- Seminar on the Management of Plutonium-Contaminated Solid Wastes, Centre de production de plutonium de Marcoule, 1974 (1)
- Spain. Junta de Energía Nuclear (1)
- Svensk kärnbränsleförsörjning (1)
- Switzerland. Amt für Wissenschaft und Forschung (1)
- Symposium on the On-Site Management of Power Reactor Wastes (1979 : Zürich, Switzerland) (1)
- Symposium on the Safety of Nuclear Ships, Hamburg, 1977 (1)
- Technical Seminar on the Treatment, Conditioning, and Storage of Solid Alpha-Bearing Waste and Cladding Hulls (1)
- United Kingdom Atomic Energy Authority (1)
- Workshop on Low-flow, Low-permeability Measurements in Largely Impermeable Rocks (1)
- Workshop on the Migration of Long-lived Radionuclides in the Geosphere (1979 : Brussels, Belgium) (1)