Search for: Title Author Subject Series that begins with: 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings > Browse Headings # World Health Organization. 1 World Heritage areas 19 SEE ALSO: Historic sites 34 SEE ALSO: Natural areas 2 World Heritage areas -- Great Britain -- Guidebooks. 1 World Heritage areas -- Ireland -- Guidebooks. 1 World Heritage areas -- Pictorial works. 1 World Heritage areas -- Tanzania -- Ngorongoro Crater. 1 World Heritage sites -- SEE: World Heritage areas 19 World Heritage sites -- Great Britain -- Guidebooks. -- SEE: World Heritage areas -- Great Britain -- Guidebooks. 1 World Heritage sites -- Ireland -- Guidebooks. -- SEE: World Heritage areas -- Ireland -- Guidebooks. 1 World Heritage sites -- Pictorial works. -- SEE: World Heritage areas -- Pictorial works. 1 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings >