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Subjects
- Geology.[remove]8
- Paleontology.2
- Airplanes.1
- Archaeology.1
- Botany.1
- Chemical elements.1
- Chemistry, Organic--Study and teaching.1
- Chemistry--History--19th century.1
- Chemistry--Study and teaching.1
- Dwellings -- Michigan -- Ann Arbor.1
- Earthquakes.1
- Education -- United States.1
- Evolution -- Religious aspects.1
- Excavations (Archaeology) -- Egypt.1
- Excavations (Archaeology) -- France.1
- Excavations (Archaeology) -- North America.1
- Forests and forestry -- Michigan.1
- Fossils.1
- Geology -- Michigan -- Maps.1
- Geology -- Michigan.1