Zdroje

Book "Biodiversity management in quarries & gravel pits - Putting nature back together" (2015)

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International Winners - Editions 2012 & 2014

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Libellen in Kiesgruben & Steinbrüchen - Aus dem Leben der schnellen Schönen (2011)

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Orchideen in Kiesgruben und Steinbrüchen - Trickreiche Exoten in buntem Gewand (2012)

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Vögel in Kiesgruben und Steinbrüchen - Von Amsel bis Zwergtaucher (2013)

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Förderung der biologischen Vielfalt in den Abbaustätten von HeidelbergCement - Richtlinie für Europa (2010)

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Amphibien und Reptilien in Kiesgruben und Steinbrüchen – Ein Leben zwischen den Elementen (2014)

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Der Quarry Life Award in Deutschland – Die fünf deutschen Finalisten 2014

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Book "Amphibians and reptiles in quarries and gravel pits - Wanderers between the elements" (2014)

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Book "Birds in quarries and gravel pits - Flying gemstones and swift hunters" (2013)

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Book "Orchids in quarries and gravel pits - Colourful queens of the plant kingdom" (2012)

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Book "Dragonflies in quarries & gravel pits - The life of the quick and beautiful" (2011)

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