1. ASPECTS CONCERNING AIR POLLUTION IN ORADEA TOWN. Authors: CRISTINA MUT, O. GACEU, EUGENIA ŞERBAN, RIBANA LINC.2. THE AIR RELATIVE HUMIDITY REGIME IN THE BIHOR AND VLĂDEASA MOUNTAINS. Authors: O. GACEU.3. CHARACTERISTICS OF THE FOG IN THE BIHOR AND VLĂDEASA MOUNTAINS. Authors: O. GACEU.4. THE HOARFROST AS A RISK WEATHER PHENOMENON IN THE BIHOR AND VLĂDEASA MOUNTAINS . Authors: ANIŞOARA IORDACHE, CARMEN DRAGOTĂ, O. GACEU.5. THERMIC INVERSIONS IN THE AREA OF ORADEA. Authors: O. GACEU.