Bridge.
graphic bridge_primitive.jpg
has_type Cable_stay_bridge.
has_type Cantilever_bridge.
has_type Suspension_bridge.
has_type Truss_bridge.
is_type_of Artefact.
Types http://www.matsuo-bridge.co.jp/english/bridges/basics/index.shtm
   
 
Vr.155, Dec 2009     Readme      List of Objects Queries: obromley@hotmail.com