50 yil WWF Floodplain qo'riqxonasi Marchegg
Biologik xilma-xillikni saqlashning 50 yilligi Qo'shimcha ma'lumot: https://www.wwf.at/das-schuetzen-wir/fluesse/march-thaya-auen/
50 yillik bioxilma-xillikni saqlash
Qo'shimcha ma'lumotlar: https://www.wwf.at/das-schuetzen-wir/fluesse/march-thaya-auen/