The book "Heat conductivity of a multilayer flat wall under stationary mode" by B. and . Timoshpolsky is a fascinating and in-depth study devoted to one of the key topics in the field of thermal physics and construction mechanics. This publication will be of particular interest to those who seek to understand how heat is transmitted through multi-layer structures, and how these processes affect the efficiency of thermal insulation in modern buildings. In his book, Timoshpolsky not only examines the theoretical aspects of thermal conduction, but also offers practical solutions that can be applied in construction practice. It analyzes the different materials used in multilayer walls and their effect on heat fluxes. Readers will be able to learn about how to choose the right materials to achieve maximum energy efficiency, as well as methods for calculating thermal losses in buildings. This book will be useful not only for students and graduate students studying thermal physics and construction engineering, but also for practicing engineers, architects and designers. It will become an indispensable reference tool for those working in the field of design and construction, as well as for specialists engaged in energy audit and optimization of thermal processes in buildings. The age category of readers can vary from senior students to experienced professionals seeking to update their knowledge in the field. The topics raised in the book cover a wide range of issues related to thermal conductivity and its impact on the comfort and safety of buildings. The author focuses on the importance of the correct choice of materials and design solutions that can significantly reduce heating and air conditioning costs. In today's world, where environmental issues and resource savings are becoming more relevant, the knowledge contained in this book is becoming especially valuable. The author's style is clear and accessible, which allows even complex technical concepts to be explained in simple and understandable language. Timoshpolsky uses many examples and illustrations, which makes the material more visual and easy to perceive. His previous work has also earned recognition in academia, and this book will not be an exception. Readers familiar with his other works will appreciate the consistency and depth of analysis that the author applies in each of his works. If you are looking for literature that will help you understand the intricacies of the thermal conductivity of multilayer structures and give practical recommendations on improving the energy efficiency of buildings, then “The thermal conductivity of a multilayer flat wall under stationary mode” will be a real find for you. This book will not only expand your knowledge, but also inspire new ideas and solutions in the field of design and construction. Thus, this edition represents an important contribution to the field of thermal physics and construction mechanics, and will be useful to all who are interested in modern technologies and methods aimed at creating comfortable and energy-efficient buildings. Do not miss the opportunity to immerse yourself in the world of thermal conductivity and discover new horizons in the design of multilayer structures!