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- ...bsp;'[http://tchie.uni.opole.pl/ecoproc07/key/Szydlo_07.pdf WHO DISCOVERED OXYGEN?]'''</span> by ''<span>Zbigniew SZYDŁO</span> ...e="font-size:small;">[[PDF:1713 Oxygen William Derham|William Derham about Oxygen]] </span>30 KB (2,933 words) - 04:35, 2 May 2023
- ...] about his experiments with air pressure. Makes beautiful engravings; the subject ''[[De zeven kunsten|<u>The Seven Liberal Arts</u>]]'' and ''<u>[[1597 Alkm ...dology to re-gain silver ore. Probably makes <u>''[[Dossier:Drebbel Oxygen|oxygen for his submarine]]''</u>.17 KB (2,599 words) - 18:54, 28 June 2023