upper distance lock
41Celilo Canal — in 1910; the Columbia River is visible at left. Principal engineer Army Engineers[1] …
42Song Dynasty — This article is about the Northern and Southern Song Dynasties. For the Southern Dynasty, see Liu Song Dynasty. Song 宋 ← …
43Odometer — An odometer or odograph[1][2] is an instrument that indicates distance traveled by a vehicle, such as a bicycle or automobile. The device may be electronic, mechanical, or a combination of the two. The word derives from the Greek words hodós (… …
44Railroad switch — For other uses, see Switch (disambiguation). A right hand railroad switch with point indicator pointing to right …
45River Cherwell — Coordinates: 51°44′32″N 1°14′54″W / 51.74222°N 1.24833°W / 51.74222; 1.24833 …
46Locks and weirs on the River Thames — The English River Thames is navigable from Lechlade to the sea, and this part of the river falls 71 metres (234 feet). There are 45 locks on the river, each with one or more adjacent weirs. These lock and weir combinations are used for… …
47Chesapeake and Ohio Canal National Historical Park — IUCN Category V (Protected Landscape/Seascape) …
48Subaru Legacy — Infobox Automobile name = Subaru Legacy aka = Subaru Liberty Subaru B4 Subaru Legacy B4 Subaru Legacy Touring Wagon manufacturer = Subaru predecessor = none parent company = Fuji Heavy Industries production = 1989 present class = Mid size (1989… …
49plate tectonics — plate tectonic, adj. Geol. a theory of global tectonics in which the lithosphere is divided into a number of crustal plates, each of which moves on the plastic asthenosphere more or less independently to collide with, slide under, or move past… …
50Trent-Severn Waterway — This article is not about the British company Severn Trent Water. : For waterways in England with Trent and Severn in their names see Canals of the United Kingdom The Trent Severn Waterway is a Canadian canal system formerly used for commercial… …
