The idea to write this volume arose in May, 1979 on the "Annual Seminar on Sta­ tistical Physics" in Lähnwitz near Güstrow, a nice resort place of the Pädagogische Hochschule Liselotte Herrmann Güstrow, where most of the authors were present. The participants of this seminar agreed in the general opinion that the transport properties of charged particle systems starting from ionized gases and ending with liquid metals should be interpreted in a unique way. The basic method of such a uni­ fied theory which is still in "status nascendi" nowadays, should be the statistical physics of systems with Coulombic interactions. The first two chapters of this volume are devoted to mainly experimental aspects in investigating high density plasmas. After transport theory is presented in chapter 3., two special problems are considered being of interest in the theory of high density plasmas: the problem of bound states in kinetic theory (chapter 4.) and the theory of liquid metals (chapter 5.), which may be considered as weakly coupled nonideal plas­ mas. Besides transport properties also thermodynamic properties of den se Coulomb systems have been discussed in chapters 1. and 5. The theory of thermodynamic properties of plasmas has been given in a previous volume (Nr. 5) of this series.