Actes du IVe Congrès international de spéléologie en Yougoslavie = proceedings of the 4th International Congress of Speleology in Yogoslavia
Subtitle: Postojna, Ljubljana, Dubrovnik, 12-26 IX 1965
Publisher: the Congress
Published: 1966
Place of publication: Ljubljana
Language: fre; eng; ger; ita; spa; rus
Notes: At head of title: Fédération yougoslave de spéléologie. Speleological Federation of Yougoslavia.

French, English, German, Italian, Spanish or Russian.