Yugotours in the eighties...
1985 - Pula JAT B707, Ljubljana JAT DC-9
1986 - Pula JAT B727, Ljubljana/Dubrovnik combined JAT B727
1987 - Pula JAT B727, Ljubljana Adria 1-11, Dubrovnik Aviogenex 737 (JAT 727 in early season)
1988 - As above but Ljubljana Adria DC9 and Split Aviogenex 737
1989 - Pula JAT 727 ?, Ljubljana JAT DC9, Split and Dubrovnik as 1988.
I think