{"id":"000932871","type":"book","title":"Actes du 6e Congrès International de Spéléologie. Olomouc - ČSSR. Communications de la Section Spéléo-Archéologie. Proceedings of the 6th International Congress of Speleology, Olomouc 1973","publisher":"Academia","publisher-place":"Praha","issued":{"raw":"1976"}}