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Subjects
- Engineers -- Michigan -- Ann Arbor.[remove]14
- Engineering.5
- Laboratories.3
- Rockets.3
- Computers.2
- World War, 1914-1918.2
- Astronautics -- History.1
- Astronomical observatories.1
- Boats.1
- Bridges -- Michigan.1
- Bridges.1
- Building materials.1
- Buildings -- Michigan -- Detroit.1
- Camping.1
- Canals.1
- Coal mining.1
- Computer engineering.1
- Concrete construction.1
- Construction industry -- New York (State) -- New York.1
- Dams.1