150 let Postojnske jame, 1818-1968.
By: Uredniški odbor: Valter Bohinec, Rado Gospodarič [in] Roman Savnik.
Contributors: Bohinec, Valter, ed.; Gospodarič, Rado, ed.; Savnik, Roman, ed.
Publisher: Zavod Postojnske jame
Published: 1968
Place of publication: Postojna
Language: slv
Number of pages: 104
Subjects: Postojna Grottoes.
Other titles: Stopetdeset let Postojnske jame, 1818-1968
Notes: Includes bibliographies.
Summaries in English and German.