TY - CPAPER AU - Ojars Polis TI - USING VALUE OF TREE FOLIAGE IN LATVIA T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 13th SGEM GeoConference on WATER RESOURCES. FOREST, MARINE AND OCEAN ECOSYSTEMS PY - 2013 DO - 10.5593/sgem2013/bc3/s14.007 PB - Stef92 Technology ER -