author = { Casteret, Norbert Seiffert, Alice AND Seiffert, Alice AND Seiffert, Hans AND Seiffert, Hans AND Casteret, Norbert },

title = { Geheimnisvolle Höhlenwelt },

publisher = {Brockhaus},

keywords = { Höhle , Speläologie , Erforschung , Speläologe },

year = {1957},

address = { Leipzig },

url = { http://slubdd.de/katalog?TN_libero_mab2 }