Geology topics
Richard D. Koch
Publications and source records attributed to Richard D. Koch.
Map showing spectrographically determined molybdenum in stream sediments, Ketchikan and Prince Rupert quadrangles, Alaska
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Open-File Report↗
Map showing spectrographically determined chromium in stream sediments, Ketchikan and Prince Rupert quadrangles, Alaska
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Open-File Report↗
Map showing spectrographically determined cobalt in stream sediments, Ketchikan and Prince Rupert quadrangles, Alaska
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Open-File Report↗
Map showing spectrographically determined nickel in stream sediments, Ketchikan and Prince Rupert quadrangles, Alaska
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Open-File Report↗
Map and tables describing areas of metalliferous mineral resource potential in the Ketchikan and Prince Rupert quadrangles, Alaska
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Open-File Report↗
Analyses of rock and stream-sediment samples from the Ketchikan Quadrangle, southeastern Alaska
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Open-File Report↗
Analyses of rock and stream-sediment samples from southern Bradfield Canal Quadrangle, southeastern Alaska
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Open-File Report↗