[Koha-oz] Koha Help please

I am working at a small library in Central Asia, where I installed Koha 4 years ago. We would like to add a few more libraries to the Z39.50 server list. Can you direct me to how I find a list of libraries which we can add to the list we have? We especially need to find some Russian language theological libraries which we can access in order to catalogue the collection which is mostly Russian language. Most grateful for any help on offer. Lynn Pryor