Geological Survey of Denmark and Greenland Bulletin | Geological Survey of Denmark and Greenland. Cambridge University Press.
Citace podle Chicago (17th ed.)Geological Survey of Denmark and Greenland Bulletin | Geological Survey of Denmark and Greenland. Cambridge University Press.
Citace podle MLA (9th ed.)Geological Survey of Denmark and Greenland Bulletin | Geological Survey of Denmark and Greenland. Cambridge University Press.
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