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Rolf Krake : Europe's first turreted ironclad | Analytt | 386(091)(05) M Putnam, Arnold A. / - London, 1998. - S.56-63 | Putnam, Arnold A. | 1998 |
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The introduction of the revolving turret | Analytt | q386(091)(05) A Putnam, Arnold A. / I: American Neptune. - Vol.56, No.2, 1996 - Salem, Mass, 1996. - S.117-129 | Putnam, Arnold A. | 1996 |