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Subjects
- Expeditions and surveys.[remove]2
- Archaeological sites -- Yucatán Peninsula.1
- Birds.1
- Boats -- Indochina.1
- Dogsleds.1
- Eskimos.1
- Geology -- Arctic regions.1
- Glaciers -- Climatic factors.1
- Glaciers -- Greenland.1
- Indians of North America -- Canada.1
- Scientific expeditions.1
- Students -- Massachusetts -- Cambridge.1
- World War, 1914-1918.1
- World War, 1939-1945.1
- Zoology.1