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Pioneers in Polar Seas | Analytt | 386(05) N 22 England, D. / I: Nautical Magazine. - Årg. 224 Nr. 1, 1980 - London. - 13-16 | England, D. | |
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They looked for the Northeast Passage to the riches of China : pioneers in Polar seas | Analytt | tq386(05) C England, D. / I: The Compass. - Årg. 51 Nr. 1, 1981 - New York. - 8-11 | England, D. | |