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Subjects
- Geology.[remove]6
- Paleontology.2
- Airplanes.1
- Botany.1
- Dwellings -- Michigan -- Ann Arbor.1
- Earthquakes.1
- Education -- United States.1
- Evolution -- Religious aspects.1
- Forests and forestry -- Michigan.1
- Fossils.1
- Geology -- Michigan -- Maps.1
- Geology -- Michigan.1
- Geology -- Minnesota -- Maps.1
- Geology -- Study and teaching (Higher) -- Michigan -- Ann Arbor.1
- Geology -- United States.1
- Glaciers.1
- Human beings -- Origin.1
- Laboratories.1
- Meteorology.1
- Military art and science.1