Rkt. župa means Roman Catholic Parish
Gkt. župa means Greek Catholic Parish
upr. iz means “managed from” (priest from another parish makes regular visits to that parish)
First line in the address is the name of the chapel (typically the name of a Saint: St. Joseph, St Andrew etc).
To make a phonecall from abroad, dial international telephone code for Croatia +385 and then the phone number without leading zero (0). For example, the number 031 595 000 translates to +385 31 595 000.

Croatian Genealogy Research
We have a long experience in gathering genealogy data in Croatian parishes
http://www.sambunjak.com