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Subject
- Triangulation5
- Aquifers4
- Groundwater4
- Geology, Structural3
- Maps3
- Hydrography2
- Analysis1
- Coastal ecology1
- Composition1
- Discovery and exploration1
- Earthquakes1
- Faults (Geology)1
- Geology, Stratigraphic1
- Geophysics1
- Grabens (Geology)1
- Hydrogeology1
- Indians of North America1
- Observations1
- Quaternary Geologic Period1
- Water1
