Geology topics
John R. Henderson
Publications and source records attributed to John R. Henderson.
Ten preliminary aeromagnetic maps covering Clark, Floyd, Hamilton, Hancock, Harrison, Jackson, Jefferson, Madison, Tipton, and Washington Counties, Indiana
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Open-File Report↗
Two preliminary aeromagnetic maps covering Johnson and Marion Counties, Indiana
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Open-File Report↗
Preliminary aeromagnetic map covering Fountain County, Indiana
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Open-File Report↗