SCHWARZSEE (CANTON OF FRIBOURG)
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BTLANDSCAPES, VALLEYS AND LAKES OF THE CANTON OF FRIBOURG
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UDC(494.41-312)
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Descriptor GERSCHWARZSEE (KANTON FREIBURG)
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Descriptor ENGSCHWARZSEE (CANTON OF FRIBOURG)
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Descriptor FRELAC NOIR (CANTON DE FRIBOURG)