Geological survey of Northern Ireland, 1:50,000 : Bedrock.
Keyworth : British Geological Survey for the Geological Survey of Northern Ireland,
1985-
Earlier eds.: Solid ed. published by the Ordnance Survey for the British Geological Survey, then Geological Survey of Northern Ireland.
Graphic index in UK geology file and Map reading room.
Maps either flat or (latterly) folded.
Sheet 18. Dungiven (2007, flat) -- Sheet 26. Draperstown (1995, flat) -- Sheet 32 and 31. Kesh (1994, flat) -- Sheet 33. Omagh (1995, flat) -- Sheet 47. Armagh (1985, flat) -- Sheet 57 and part of 58. Lisnaskea (2005, flat)