1. ESTIMATION OF ENVIRONMENTAL RADIONUCLIDE CONCENTRATION IN SOILS, A COMPARISON OF METHODS FOR THE ANNUAL RADIATION DOSE DETERMINATION IN LUMINESCENCE DATING. Authors: ALIDA TIMAR, CONSTANTIN COSMA, ROBERT BEGY, GABOR SZEILER, DUMITRU BARBOS, DAN FULEA, BENEA VASILE.2. UTILIZATION FACILITIES OF BUILDING INDUSTRY BY-PRODUCTS (RED MUD) AND THEIR RADIOLOGICAL QUALIFICATION. Authors: NORBERT KÁVÁSI, VICTOR JOBBÁGY, JANOS SOMLAI, GABOR SZEILER, TIBOR KOVÁCS.