About the book: 1990 / The author proposes an original hypothesis according to which the periodic approach of Halley’s comet to the Earth does not pass without leaving a mark on the latter and its inhabitants. How reliable are facts of this kind? Are they not the result of a random coincidence of individual phenomena and events? Answers to these and other similar questions can be found in the proposed brochure, designed for a wide range of readers. http://znak.traumlibrary.net