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Friend, P.F., Alexander-Marrack, P.D., Nicholson, J. og Yeats, A.K. 1976. Devonian Sediments of East Greenland II. Sedimentary Structures and Fossils. Meddelelser om Grønland. 206, 2 (jan. 1976), 91 pp. . DOI:https://doi.org/10.7146/mog.v206.143410.