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Subjects
- Engineers -- Michigan -- Ann Arbor.[remove]19
- Engineering.6
- Laboratories.3
- Rockets.3
- Bridges.2
- Computers.2
- Dams.2
- Engineering -- Research.2
- World War, 1914-1918.2
- Apollo Lunar Surface Experiments Package.1
- Astronautics -- History.1
- Astronomical observatories.1
- Billiards.1
- Boats.1
- Bridges -- Michigan.1
- Building materials.1
- Buildings -- Michigan -- Detroit.1
- Business enterprises -- Michigan -- Ypsilanti.1
- Camping.1
- Canals.1