Map of the Welsh devolution referendum, 1997 (percentage of ""Yes" votes).
This file was derived from: Welsh devolution referendum, 2011.svg by MrPenguin20This file was derived from: Wales Powys locator map.svg by NordNordWest
data source: Richard Dewdney: Results of Devolution Referendums (1979 &amp; 1997): Research Paper No 97/113, House of Commons Library
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