Title: Locks and weirs on the river Thames : how do they work?
Author: Environment Agency Thames Region
Document Type: Monograph
This brief Environment Agency booklet presents the Locks and Weirs history of the River Thames. A simplified diagram of a lock is provided.
Publisher: Environment Agency
Publication Date: [after 1996]
Publication Place: Reading
Subject Keywords: History; Locks (water transport); Rivers; Weirs
Geographic Keywords: Thames
Extent: n.p. 
Total file downloads: 22