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Analysis,

Detection and Commercial Value

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of the l^are Metals.

A treatise on the occurrence and distribution of the Rare Metals and Earths, the methods of determination and their commercial value in the arts and industries with a historical and statistical review of each.

by

QHLY, Ph.D.

Third Edition.

1907 .J , ,*V The Mining Reporter PuBtisHiitG Company

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