The Nonlinear Theory of Radio Wave Propagation in the Ionosphere, written by the famous scientists Gurevich A. In. and Schwarzburg A. B. It is a fascinating and in-depth study that opens new horizons in understanding the complex processes occurring in the ionosphere. This work will be a real find for everyone interested in physics, radio engineering and atmospheric phenomena, as well as for students and specialists in the field of radio communication and meteorology. The ionosphere is a layer of the atmosphere that plays a key role in the propagation of radio waves. The book immerses the reader in the world of nonlinear processes that affect the behavior of radio signals in this unique layer. The authors take on the task of explaining how various factors, such as solar activity, geomagnetic fields, and atmospheric conditions, can alter the propagation pathways of radio waves. The reader will be able to learn about how these changes can affect the quality of communication, navigation and even the operation of satellite systems. The book is written in an accessible language, which makes it suitable for both professionals and amateurs. If you are a student studying physics or radio engineering, or just interested in how the world around us works, this work will become a valuable source of knowledge for you. It will also be useful to researchers working in related fields such as meteorology and geophysics. The topics raised in the book cover a wide range of issues, ranging from the basics of radio waves to complex mathematical models describing their behavior in the ionosphere. The authors not only present theoretical aspects, but also support their conclusions with practical examples and experimental data, which makes the material more visual and understandable. This combination of theory and practice allows the reader not only to assimilate information, but also to see its application in real life. The style of Gurevich and Schwarzburg is distinguished by clarity and logic. They skillfully use illustrations and graphs to visualize complex concepts, making the learning process more engaging. Both authors have extensive experience in scientific activities and publications, which gives their work additional value. Their previous work, such as research in radiophysics and atmospheric science, has already established itself as a significant contribution to these fields. The book “Nonlinear theory of radio wave propagation in the ionosphere” not only expands the horizons of knowledge, but also inspires further research. It emphasizes the importance of understanding the ionosphere for the development of modern communication and navigation technologies, which makes it relevant in the context of rapid progress in the field of telecommunications. If you are looking for literature that combines scientific rigor and accessibility, then this publication will be a real find for you. Discover the world of radio waves and the ionosphere with Gurevich and Schwarzburg, and you will not only enrich your knowledge, but also enjoy a fascinating journey into the world of science.