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3by Petersen, O. V., Johnsen, O.Get access
Published in TMPM Tschermaks Mineralogische und Petrographische Mitteilungen (1980)
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5by Johnsen, O., Nielsen, T. F. D., Rønsbo, J. G.Get access
Published in Neues Jahrbuch für Mineralogie - Monatshefte (1994)
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9by PERCHIAZZI, NATALE, MCDONALD A. M., GAULT R. A., JOHNSEN O., MERLINO, STEFANOContributors: “...Johnsen, O....”
Published in The Canadian Mineralogist (2000)
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10by Petersen, O.V., Johnsen, O., Gault, R.A., Niedermayr, G., Grice, J.D.Get access
Published in Neues Jahrbuch für Mineralogie - Monatshefte (2004)
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12by Petersen, O.V., Niedermayr, G., Johnsen, O., Gault, R.A., Brandstä tter, F.Get access
Published in Neues Jahrbuch für Mineralogie - Monatshefte (2002)
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13by Petersen, O. V., Rønsbo, J. G., Leonardsen, E. S., Johnsen, O., Bollingberg, H., Rose-Hansen, J.Get access
Published in Neues Jahrbuch für Mineralogie - Monatshefte (1994)
Article in Journal/Newspaper