Outline of the contents: (U`<r-n\n
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1. Basic Interferometers for Optical Testing B183h
2. Phase-Shifting Interferometry -] @cUx
3. Specialized Optical Tests eDkJ+5b
4. Long Wavelength Interferometry 4,g[g#g<q
5. Testing of Aspheric Surfaces :OEovk(`
6. Measurement of Surface Microstructure =lb5 #
7. Absolute Measurements a_z1S Z2[
8. Concluding Remarks