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Subjects
- Equipment Design1
- Equipment and Supplies3
- Microscopy -- instrumentation3
- Military Science3
- Motor Vehicles4
- Night Vision1
- Ocular Motility Disorders -- diagnosis1
- Optical Devices[remove]19
- Optometry -- instrumentation1
- Physics1
- Refractive Errors1
- Science3
- Torsion Abnormality -- diagnosis1
- United States3
- Vision Tests -- instrumentation1
- Weights and Measures1