Institute of Geological Sciences 1:250,000 series [of Great Britain, its continental shelf and part of Ireland]: solid geology.
Southampton : I.G.S.,
1977-
Base maps: Joint Operations Graphic, series 1501.
Graphic index in central file (UK). Filed alphabetically.
National and U.T.M. grids.
Some sheets in French waters are published in collaboration with B.R.G.M.