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Frozen Under | Analytt | Mag.91(05) N Smith, Roff / I: National Geographic. - December, 2001 - Washington D.C., 2001. - s.2-36 | Smith, Roff | 2001 |
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Shipwreck in the forbidden zone | Analytt | Mag. q091(05) N Smith, Roff / I: National Geographic. - Vol. 216, No. 4, 2009 - Washington D.C., 2009. - s. 116-127 - Språk: Engelsk | Smith, Roff | 2009 |