1655 Analysis of the imperfections of the crystal structure by the profile and intensity of X-ray reflections: studies . Author's Guide A. N. Ivanova and A. M. Polyakova is a unique work that will become an indispensable assistant for students, graduate students and specialists in the field of materials science, physics and chemistry. This manual not only offers a deep dive into the theory and practice of analyzing crystal structures, but also opens new horizons for understanding the complex processes occurring in crystals. The book examines key aspects of X-ray diffraction, including methods for analyzing the profile and intensity of reflections. The authors share their knowledge and experience, which allows the reader not only to learn the theoretical foundations, but also to apply them in practice. The manual includes many examples and tasks, which makes it ideal for self-study and preparation for laboratory exercises. One of the main topics raised in the book is the analysis of imperfections of the crystalline structure. This is an important aspect that affects the physical and chemical properties of materials. Understanding the imperfections of the crystal lattice allows scientists to develop new materials with specified characteristics, which is relevant in modern materials sciences. The book addresses issues such as defects in crystals, their effects on mechanical properties, and methods of studying them with X-ray diffraction. Who can like this tutorial? First of all, it will be useful for students and graduate students studying physics, chemistry and materials science . The book will also interest practitioners working in the field of materials science, as well as researchers involved in the fundamental and applied aspects of crystallography. Readers who are passionate about science and want to understand the nature of materials more deeply will find in this manual a lot of useful knowledge. The style of the authors is distinguished by clarity and accessibility of presentation, which makes complex scientific concepts understandable to a wide audience. A. N. Ivanov and A. M. Poles are experienced scientists who not only have deep knowledge in their field, but also know how to share them with others. Their previous works were also noted for their high level of scientific rigor and practical significance, which confirms their reputation in the scientific community. The book "No. 1655 Analysis of the imperfections of the crystalline structure by the profile and intensity of X-ray reflections" will be an excellent addition to the library of everyone who is interested in modern methods of material analysis. It will not only expand the horizons of the reader, but also give the opportunity to apply the acquired knowledge in practice. If you are looking for literature that combines theory and practice, this guide will be your reliable companion in the world of crystallography and materials science. Thus, this tutorial not only enriches knowledge in the field of X-ray diffraction, but also opens doors to the world of new research and development. If you want to deepen your knowledge of crystal structures and their analysis, this edition should definitely take its place on your shelf.