Thames Basin. Average Annual Rainfall, 1916-1950. (Scale 1:250,000 ... 1969).
[London] : Thames Conservancy,
[1971]
Insets: Average monthly rainfall as percentage of annual rainfall, 1916-1950.
With: Thames Conservancy. Water Resources Act 1963. Section 14. Report of survey, 1969. Thames catchment area & London excluded area. Map. 3.