Ordnance Survey of Ireland & O'Flanagan, M. (1927). Letters containing information relative to the antiquities of the County of Roscommon: Collected during the progress of the Ordnance Survey in 1837. [s.n.].
MLA CitationOrdnance Survey of Ireland and Michael O'Flanagan. Letters Containing Information Relative to the Antiquities of the County of Roscommon: Collected During the Progress of the Ordnance Survey in 1837. [s.n.], 1927.
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