Jezik
Debevec, Bogdan, Turizem KRAS d.d., Jamska cesta 30, SI-6230 Postojna, Slovenia
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Acta Carsologica Letn. 41 Št. 1 (2012) - Original papers
Preliminary study for the adaptation of the »Heaven's Cave« for tourist purposes (Phong Nha-Ke Bang national park, Vietnam)
Povzetek PDF (English)