Ballin TB, Faithfull J. Gazetteer of Arran pitchstone sources: presentation of exposed pitchstone dykes and sills across the Isle of Arran, and discussion of the archaeological relevance of these outcrops. SAIR [Internet]. 2009 Jan. 1 [cited 2024 Nov. 24];38:1-39. Available from: https://journals.socantscot.org/index.php/sair/article/view/2404