TY  - CPAPER
AU  - N. Zhechev
TI  - ECOLOGICAL PROBLEM AT THE “RIVER – BRIDGE” CROSSPOINT
T2  - 9th International Multidisciplinary Scientific GeoConference SGEM2009
PY  - 2009
SP  - 503
EP  - 508
PB  - SGEM Scientific GeoConference
ER  -