https://www.cambridge.org/core/journals/geological-magazine/article/abs/iithe-petrology-of-the-suffolx-boxstones-crag/AD023C63A2B3C2EB6F83240FAC87FFB9
II.—The Petrology of the Suffolx Box-stones (Crag) | Geological Magazine | Cambridge Core
II.—The Petrology of the Suffolx Box-stones (Crag) - Volume 2 Issue 6
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