1. IDENTIFICATION THE SOURCES OF PAHS IN CLUJ-NAPOCA’S CITY ATMOSPHERE USING MOSS AS BIOMONITORS. Authors: MIHAIL SIMION BELDEAN-GALEA, VLAD PĂNESCU, SORIN POP, ANDREEA-MARIA ROTARU.2. THE OCCURRENCE AND SOURCE EVALUATION OF POLYCYCLIC AROMATIC HYDROCARBONS IN URBAN ATMOSPHERE USING MOSS AS BIOMONITOR AND GC-MS ANALYSIS. Authors: MIHAIL SIMION BELDEAN-GALEA, SORIN POP, VLAD PĂNESCU, EDINA REIZER, ANDREEA ROTARU.3. THE ASSESSMENT OF CONTAMINATION AND SOURCE OF POLYCYCLIC AROMATIC HYDROCARBONS FROM THE SEDIMENTS OF THE SOMEȘ RIVER. Authors: MIHAIL SIMION BELDEAN-GALEA, MIRCEA ANTON, SORIN POP, MIHAELA CӐTӐLINA HERGHELEGIU, VLAD PӐNESCU.