TY  - CPAPER
AU  - Ognian Gubev
TI  - ENVIRONMENTAL SITUATION AS A RESULT OF MINING ACTIVITIES IN BULGARIA (TILL 01.01.2000)
T2  - 1st International Scientific Conference - SGEM2001
PY  - 2001
SP  - 371
EP  - 388
PB  - SGEM Scientific GeoConference
ER  -