1. MICRO AND NANO ORGANIZATION OF ATMOSPHERIC PARTICULATE MATTER IN GRIGORESCU DISTRICT OF CLUJ-NAPOCA. Authors: IOAN PETEAN, GERTRUD-ALEXANDRA PALTINEAN, AURORA MOCANU, DANA FLORINA MUNTEAN, LIANA MURESAN, GEORGE ARGHIR, MARIA TOMOAIA-COTISEL.2. AIRBORNE PARTICLES POLLUTION IN DEJ CITY. Authors: IOAN AUREL CHERECHES, IOAN PETEAN, GERTRUD-ALEXANDRA PALTINEAN, AURORA MOCANU, LIANA MURESAN, GEORGE ARGHIR, MARIA TOMOAIA-COTISEL.