chapter 1 The Semiconductor-Impurity System -- chapter 2 Impurity Behavior in Semiconductors -- chapter 3 Impurity Solubility in Semiconductors (a Macroscopic Approach) -- chapter 4 Microscopic Analysis of Impurity Solubility in Semiconductors -- chapter 5 Impurity Interactions in Semiconductors -- chapter 6 Associations of Impurity Atoms -- chapter 7 Impurity Kinetics in Semiconductors -- chapter 8 Impurity Migration in the Formation of Mobile Complexes.