Encyclopædia Britannica, Ninth Edition/Tourmaline

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Tourguenieff, Ivan

Encyclopædia Britannica, Ninth Edition, Volume XXIII

Tourmaline

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See also Tourmaline on Wikipedia; Tourmaline in the 11th Edition; and the disclaimer.

2741961Encyclopædia Britannica, Ninth Edition, Volume XXIII — Tourmaline

TOURMALINE.Electricity, vol. xiii. p. 99; Geology, vol. x. p. 228; and Minerology, vol. xvi. p. 409.

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