1. DETERMINATION OF AIR AMMONIA AND HYDROGEN SULFIDE AT A PIG FARM IN CLUJ COUNTY. Authors: GABRIEL GATI, SUSANA REVNIC, MARIA-ELISABETA LOVÁSZ, ANCA ELENA GURZAU, ANDREEA BRAD.2. LIMONENE IN SCHOOL INDOOR ENVIRONMENTS – SOURCE AND LEVEL OF CONTAMINATION. Authors: ANDREEA BRAD, IRINA DUMITRAȘCU, ANDREA BRIGITA BLAGA.3. CHILDREN’S EXPOSURE TO LEAD AND CADMIUM IN BAIA MARE AREA, ROMANIA. Authors: CRISTIAN POP, ANDREA BRIGITA BLAGA, ANDREEA BRAD.