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Sleipner : Norwegian corvette | Analytt | 386(05) M 34 Osborne, Richard / I: Marine News. - Årg. 35 Nr. 1, 1981 - London. - 21 | Osborne, Richard | |
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The corvettes | Analytt | 386(05) S Osborne, Richard / I: Ships Monthly. - Vol.28, No.6, 1993 - Burton-on-Trent, 1993. - S.16-20 | Osborne, Richard | 1993 |