BULGARIA
1113 Sofia
National Institute of Geophysics, Geodesy and Geography - BAS
Acad. G. Bonchev Str., block 3
Experimental Laboratory of Karstology
Petar Stefanov - researcher
E-mail: psgeo@abv.bg
Dilyana Stefanova, Assoc. Prof., Ph.D.
E-mail: dili_stefanova@abv.bg
Phone: +3592 971 30 05
+3592 971 33 75
WWW: prokarstterra.bas.bg