Rivers pollution survey Scotland : river quality classification for areas of the River Purification Boards.
Scotland.Development Department
Edinburgh : H.M.S.O.,
1972.
To accompany: Towards cleaner water : rivers pollution survey of Scotland.
Map A: [Scotland] -- Map B: Clyde area (Clyde and Ayrshire Purification Boards) -- Map C: Forth area (Forth and Lothians Purification Boards)