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Quelle: Fotos: http://www.nps.gov/yell/ public domain Foto 1: Yellow-bellied Marmot; John Brandow; 1970 Foto 2: Yellow-bellied Marmot; Miller; 1962 Foto 3: Yellow-bellied Marmot; William S Keller; 1978 Foto 4: Yellow-bellied Marmot; William S Keller; 1978 |