1. ISOTOPIC COMPOSITION OF SPRING WATERS FROM CROATIAN KARST REGIONS: GACKA RIVER AREA. Authors: DIANA BOJIĆ, MAGDA MANDIĆ, ZVJEZDANA ROLLER-LUTZ, HANS O. LUTZ, SANJA KAPELJ, NADA HORVATINČIĆ, INES KRAJCAR BRONIĆ, ANDREA SIRONIĆ.