Links
International Society for Subterranean Biology
State Institute for Nature Protection
Ministry of Science, Education and Sports
Ministry of Environmental Protection, Physical Planning and Construction
Croatian Natural History Museum
Faculty of Science, University of Zagreb
Links of different speleological societies you may find on their basic organisations sites :
The Speleological Committee of the Croatian Mountaineering Association
Croatian Speleological Federation
Links of different Public Establishment for the Management of Protected Parts of Nature you can find on sites of: