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Subject
- Planning and Cadastral52
- Transportation50
- Geoscientific Information20
- Inland Waters19
- Groundwater18
- Hydrogeology18
- Basins (Geology)15
- Oceans13
- Coasts12
- Ocean bottom10
- Biology and Ecology7
- Marine habitats7
- Benthos6
- Elevation6
- Roads5
- Environment4
- Highway planning4
- State Transportation Improvement Program (Calif.)4
- Health3
- Health services accessibility3