<nowiki>Haraldur Sigurdsson; Haraldur Sigurðsson; Haraldur Sigurðsson; Haraldur Sigurðsson; Haraldur Sigurðsson; Haraldur Sigurðsson; Haraldur Sigurðsson; Haraldur Sigurdsson; Haraldur Sigurdsson; Haraldur Sigurðsson; Haraldur Sigurðsson; Haraldur Sigurdsson; Haraldur Sigurdsson; Haraldur Sigurdsson; Haraldur Sigurðsson; هارالدور_سيغوردسون; Haraldur Sigurdsson; Haraldur Sigurðsson; vulcanòleg i geoquímic islandès; volcanologue islandais; isländischer Vulkanologe und Geochemiker; volcanologist; íslenskur jarð- og jarðefnafræðingur; عالم براكين آيسلندي وكيميائي الأرض.; islandský vulkanolog a geochemik.; vulkanoloog uit IJsland; Haraldur Sigurdsson; H. Sigurðsson; H. Sigurdsson; Haraldur Sigurdsson; Haraldour Sigursson; Haraldur Sigurdsson; H. Sigurðsson; H. Sigursson; H. Sigurdsson</nowiki>
Haraldur Sigurðsson volcanologist  Haraldur Sigurðsson v roce 2011. |
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| Date of birth | 31 May 1939
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