IUCN

The IUCN policy statement on captive breeding

Red books for threatened landscapes : proceedings of a symposium and workshop

The wetlands of Central and Eastern Europe

Red data book. Volume 5. Angiospermae, a compilation

Red data book. Volume 4. Pisces : freshwater fishes

Red data book. Volume 3. Amphibia and Reptilia

Red data book. Volume 3. Amphibia and Reptilia

Red data book. Volume 2. Aves

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