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Captain George Peacock : the pioneer commander of Pacific steamers | Analytt | 386(091)(05) M 34 Duncan, Roland E. / I: The Mariner's mirror. - Årg. 66 Nr. 1, 1980 - Cambridge. - 17-29 | Duncan, Roland E. | |
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Chile and Peru : the first successful steamers in the Pacific | Analytt | 386(091)(05) A Duncan, Roland E. / I: The American Neptune. - Årg. 35 Nr. 4, 1975 - Salem; Mass.. - 248-274 | Duncan, Roland E. | |