The book "Crystal Oscillations and Symmetry" by A. Poole is a fascinating and in-depth study that immerses the reader in the world of crystalline structures and their oscillatory properties. This work will be a real find for students, graduate students and researchers in the field of physics, materials science and crystallography, as well as for anyone interested in how symmetry affects the physical properties of materials. In his book, Poole examines the oscillatory spectra of crystals, which is a key aspect in understanding their mechanical and thermodynamic properties. The author shares his knowledge about how the symmetry of the crystal lattice affects the vibrations of atoms and molecules, which, in turn, determines such important characteristics as thermal conductivity, elasticity and optical properties of materials. The reader will be able to learn about the different methods of analysis of oscillatory spectra, as well as how these methods are applied in practice in modern research. The book will be of interest not only to specialists, but also to those who are just starting their way in the study of crystals. Poole uses accessible language and illustrative examples, making it easy to learn complex concepts. Intriguing illustrations and graphics help to visualize the topics discussed, making the material more understandable and fascinating. Nevertheless, despite the availability of the presentation, the book does not lose its scientific depth and rigor, which makes it a valuable source of information for more experienced readers. The topics raised in the book cover a wide range of issues related to symmetry and its impact on the physical properties of crystals. Poole focuses on the importance of symmetry in various fields of science and technology, from the development of new materials to the study of natural phenomena. This work highlights how understanding symmetry can lead to new discoveries and innovations in science. A. Poulet is a well-known scientist whose research in crystallography and material physics has gained recognition in the scientific community. He is the author of several significant papers that also explore various aspects of crystalline structures and their properties. The author's style is clear and logical, which makes his books available to a wide audience, including students and teachers. His work is often recommended for study at universities and research institutes. If you are interested in topics such as crystal physics, vibrational spectra, symmetry in science or want to deepen your knowledge of materials, this book will be a real discovery for you. It will not only expand your horizons, but also help you better understand how the fundamental principles of physics are applied to real-world problems. In conclusion, “Crystal Oscillation Spectrum and Symmetry” is not just a textbook, but a real encyclopedia of knowledge that will help you immerse yourself in the exciting world of crystals and their properties. Do not miss the chance to discover new horizons of science with A. Bullet!