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Oliver, F.S. and Callander, J.G. 1929. The Excavation of Two Cairns on the Knock Hills, Edgerston, Roxburghshire: With a Report on the Relics found. Proceedings of the Society of Antiquaries of Scotland. 63, (Nov. 1929), 372–377. DOI:https://doi.org/10.9750/PSAS.063.372.377.