Petrohan-Ponor - Bulgaria
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https://b2find.eudat.eu/dataset/20ed931f-a9f6-5418-a870-837e8d7f50f8
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资源简介：
The site Petrohan is situated in the West Balkan range with a total area of 7192 ha. The relief of the region is mountain, steep, with deeply cut river valleys and secondary...
