TY - CPAPER AU - Kristina Gartsiyanova AU - Marian Varbanov AU - Atanas Kitev AU - Stefan Genchev TI - ANALYSIS OF HEAVY METAL POLLUTION IN THE PIRDOPSKA AND MEDETSKA RIVERS, TRIBUTARIES OF THE TOPOLNITSA RIVER, BULGARIA T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 21st SGEM International Multidisciplinary Scientific GeoConference Proceedings 2021, Water Resources. Forest, Marine and Ocean Ecosystems PY - 2021 SP - 17 EP - 26 DO - 10.5593/sgem2021/3.1/s12.03 PB - STEF92 Technology ER -