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The Rare Earths

Note 459 — Chapter XVI · THE GROUP IVA ELEMENTS (continued)—ZIRCONIUM AND THORIUM

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Ibid. 1910, 371, 367.

[460] Weiss and Neumann, loc. cit.; also Wedekind, loc. cit.

[461] Annalen, 1913, 395, 149.

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