InhaltsangabeElectroweak Interactions.- The Accelerators SLC and LEP.- Electroweak Measurements on the Z Resonance.- Electroweak Physics Above the Z Resonance.- W-Boson Pair Production.- Measurement of the W Mass at LEP.- Fit of Electroweak Parameters to Precision Data.- Electroweak Physics at an e+e- Linear Collider.- Summary and Conclusions.