Lead. Its occurrence in nature, the mode
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Klein, C. A.
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Article
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1924
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Wiley (John Wiley & Sons)
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It may perliaps bc mentioned that with the cxccption of t.hc appendix tho tllird edition has becn rcproduccd aiiastatically from tlic second, niid is thcreforc less pleasant to read. \* Tlic rcfcrcnces to litcraturc arc cstraordinarily iiu~nerous and complctc, English journals being by no nicaiis ii