966 resultados para Man in the Iron Mask
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Fe-Mn-concretions of a spheroidal type were found according to electron probe determinations to consist of alternating iron- and manganese-rich layers. This pattern was ascribed to seasonal variations in the physico-chemical conditions governing the precipitation of the hydrous oxides of iron and manganese. Calculations based on the rhythmic growth of the concretions investigated gave a mean accumulation rate of 0.15-0.20 mm/yr. The rather high phosphorus content (average 3.5 % P2O5) of the concretions was found to be concentrated in the iron-rich layers, probably as a result of the scavenging effect of ferric hydroxide.
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Mode of access: Internet.
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At head of title: Carl J. Friedrich.
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Mode of access: Internet.
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Rembrandt van Rijn; 5 ft. 1/8 in.x 3 ft. 7 47/64 in.; oil on canvas
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"The material incorporated in this book originally appeared as a series of articles in Water works engineering."--Pref.
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Includes index.
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Mode of access: Internet.
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Typewritten.
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Mode of access: Internet.
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Mode of access: Internet.