Ordinance 922.32 on Waterbirds and Migratory Bird Reserves of International and National Importance (OROEM) of 21 January 1991 (Status as at 15 July 2015)
Ordinance 922.32 on Waterbirds and Migratory Bird Reserves of International and National Importance (OROEM) of 21 January 1991 (Status as at 15 July 2015)