The book "Fundamentals of a unified theory of blade pumps, fans, blowers" by Yuri Sokolov is a unique and fascinating work that immerses the reader in the world of mechanics and engineering. This work will become a reference book for students, graduate students and professionals working in the field of mechanical engineering, as well as for anyone who is interested in the principles of the blade machines. In his book, Sokolov offers readers a deep and systematic understanding of the work of pumps, fans and blowers. He not only describes their design and principles of operation, but also reveals a unified theory that combines these seemingly different devices. The reader will be able to learn about how various factors, such as the shape of the blades, flow rate and pressure, affect the efficiency of machines. This information will be useful not only for engineers, but also for technical students who seek a deeper understanding of the foundations of their profession. The book is written in accessible language, which makes it understandable even for those who are just starting their way in the world of mechanics. However, despite its availability, it does not lose in depth and scientific rigor. Sokolov uses many examples and illustrations, which allows the reader to better assimilate the material and see the practical application of theoretical knowledge. Each chapter of the book is logically arranged, which helps the reader gradually immerse himself in the topic and master complex concepts. This book will be of interest not only to undergraduate and graduate students, but also to practicing engineers who want to update their knowledge or find new solutions for their projects. It will also be a useful source of information for teachers who are looking for quality materials for their courses. Engineers working in the design and operation of pumps and fans will find in the book many useful recommendations and methods that will help them in their daily work. The topics raised in the book cover a wide range of issues related to aerodynamics and hydrodynamics, which makes it relevant for specialists in various fields. Sokolov considers both theoretical aspects and practical applications, which allows readers to see how the theory is embodied in real engineering solutions. The book also touches on current trends and achievements in the field of blade machines, which makes it relevant in the context of rapidly developing technologies. Yuri Sokolov is a well-known author in the field of mechanical engineering, his works are distinguished by a high level of scientific rigor and practical orientation. He has published extensively on various aspects of mechanics and machine design.[citation needed] Readers familiar with his previous works will appreciate this book, which continues the tradition of deep and thoughtful analysis. If you are looking for literature that will help you understand the complex issues of design and operation of pumps, fans and blowers, then "Fundamentals of a unified theory of blade pumps, fans, blowers" is exactly what you need. This book will be your reliable assistant in mastering the basics of mechanics and will help you become a more qualified specialist in your field. Do not miss the opportunity to immerse yourself in the world of blade machines and discover new horizons of knowledge!