Procena i praćenje efekata - uticaja vazdušnih zagađenja na šumske ekosisteme u Republici Srbiji : nivo 1 i nivo 2 = Assessment and monitoring of the effects - impacts of air pollution on the forest ecosystems in the Republic of Serbia : level 1 and level 2 (Ministarstvo poljoprivrede, šumarstva i vodoprivrede Republike Srbije, Uprava za šume : Instutut za šumarstvo = Ministry of Agriculture, Forestry and Water Management of the Republic of Serbia, Forest Directorate : Institute of Forestry, 2013)