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- elements: XII. Other elements isolated with the aid of potassium and sodium: beryllium, boron, silicon, and aluminum". Journal of Chemical Education: 1386–1412...28 KB (3.282 kata) - 17 Juni 2024 08.58
- the clues lie in the creation of the lighter elements such as boron and beryllium". New Scientist (1794): 42. Diarsipkan dari versi asli tanggal 2008-02-07...100 KB (9.913 kata) - 28 Mei 2024 12.27
- "XII. Other Elements Isolated with the Aid of Potassium and Sodium: Beryllium, Boron, Silicon and Aluminum". The Discovery of the Elements. Easton,...154 KB (17.600 kata) - 10 Mei 2024 19.31