1
The radioecology of natural and artificial radionuclides. 15, 22 : regional congress of IRPA : proceedings : Jahrestagung / Fachverband für Strahlenschutz : Visby, 10.09.89-14.09.89 /
Book
2
Workshop on radon monitoring in radioprotection, environmental and/or earth sciences 0002: proceedings : Trieste, 25.11.91-06.12.91.
Book