A book from the Comprehensive Chemical Kinetics monograph series, edited by renowned English scientists C. Bemford and C. Tipper. This volume, written by authors from the Republic of South Africa, England and Ireland, is devoted to the kinetics of reactions occurring in the solid state, primarily the kinetics of decomposition of solid inorganic substances. The formal-kinetic description of processes at the phase boundary, experimental methods of solid state chemistry and its basic representations are briefly considered. An extensive (about 1300 references) bibliography is given.