See Also: Ordnance Survey map(dictionary)
Ordnance Survey, the(dictionary)
ordnance(dictionary)
ordnance(dictionary)
THIOKOL ORDNANCE Credit Union(finance)
survey course(dictionary)
survey(2)(dictionary)
survey(1)(dictionary)
SURVEY(law)
Survey(medicine)

Ordnance Survey, the (oh)



OS an official organization which makes very detailed and correct maps of Britain and Ireland. The maps are used by people walking in the country, and each map has its own OS number.
-see also US Geological Survey