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Walton, B. 1965. Sanerutian appinitic rocks and Gardar dykes and diatremes, north of Narssarssuaq, South Greenland. Bulletin Grønlands Geologiske Undersøgelse. 57, (Jul. 1965), 1–66. DOI:https://doi.org/10.34194/bullggu.v57.6591.