Outline of the contents: &2u
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1. Basic Interferometers for Optical Testing \0 h>!u
2. Phase-Shifting Interferometry CA igV$
3. Specialized Optical Tests 9k71h`5
4. Long Wavelength Interferometry gq+0t
5. Testing of Aspheric Surfaces .q
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6. Measurement of Surface Microstructure 9*s8%pL
7. Absolute Measurements G 0pq'7B
8. Concluding Remarks