Spatial Coverage
- North Africa.1
- North America1
- North Atlantic Ocean.1
- North Sea1
- Norway1
- Norway.1
- Oil fields1
- Osnabrück (Ecclesiastical principality)1
- Osnabrück (Germany : Landkreis)1
- Osnabrück Region (Germany)1
- Osnabrück Region.1
- Pacific Area1
- Pacific Area.1
- Pomerania (Sweden)1
- Portugal1
- Portugal.1
- Prussia, West (Poland)1
- Rhine River1
- Rhine River Region1
- Rhine River Region.1
