Nedra, 1972. -184s. The monograph is the first generalization of the experience of using the hydrochemical method for solving geological and hydrogeological problems. The theoretical basis of the method ; is discussed Assessment of hydrochemical data of physico-geological phenomena, lithology, structural-tectonic and geomorphological features of territories is considered ; hydrochemical method of determining the age of natural waters, assessment of infiltration nutrition, speed and direction of movement of underground flows, the value of artesian runoff ; methods of assessment of geochemical processes based on the analysis of hydrogeochemical equilibria. The work is based on specific examples, which are based on theoretical and field research of authors and materials of domestic and foreign specialists. The monograph is intended for a wide range of geologists, hydrogeologists, geochemists, as well as for students of higher educational institutions. Table 40, Illustrations 49, Bibliography 236 titles.