chapter 1 Review of ZrO/W Schottky Cathode / chapter 2 Liquid Metal Ion Sources / chapter 3 Gas Field Ionization Sources / chapter 4 Magnetic Lenses for Electron Microscopy / chapter 5 Electrostatic Lenses / chapter 6 Aberrations / chapter 7 Space Charge and Statistical Coulomb Effects / chapter 8 Resolution / chapter 9 The Scanning Electron Microscope * / chapter 10 The Scanning Transmission Electron Microscope / chapter 11 Focused Ion Beams / chapter 12 Aberration Correction in Electron Microscopy