Definitionn. Norwegian chemist noted for his research on organic molecules
Last update: September 21, 2015
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20 1911 (with temp. - 5° to - 23° F.) Amundsen left again with four companions, Helmer Hansen, Oscar Wisting, Sverre Hassel and Olav Bjaaland, four sledges and 52 dogs. [Please select]
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Newtown, when Hassel visited it in 1790, had only six or seven houses (_l.) [Please select]
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Hassel (who was the first to notice their general occurrence in the raw sugar sold at London) found them in a living state in no fewer than sixty-nine out of seventy-two samples. [Please select]
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