Bibliography
E. C. R.
Armstrong
1922
article
1920
article
1919
article
1912
article
Macalister, R. A. S., E. C. R. Armstrong, and R. L. Praeger, “Report on the exploration of Bronze-age cairns on Carrowkeel mountain, Co. Sligo”, Proceedings of the Royal Irish Academy 29 C (1911–1912): 311–347.
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