Book 941 Piezo-Segnetoelectrics: Part. Electrical properties of crystals: a course of lectures by the authors Tagiyev M. M. and Blystanov A. A. is a unique and in-depth study in the field of crystal physics, which will be of interest to both students and professionals working in the field of materials science and solid state physics. This publication is not just a textbook, but a real guide to the complex and multifaceted aspects of the electrical properties of crystalline materials. The book covers a wide range of topics related to piezo and ferroelectric effects, which play a key role in modern technologies. The authors examine in detail the mechanisms behind these effects and explain how they can be used in a variety of applications, from sensors to generators. This makes the book especially relevant for engineers and researchers involved in the development of new materials and devices. Tagiyev and Blistanov, having considerable experience in the field of physics, offer the reader not only theoretical knowledge, but also practical examples, which allows a better understanding of how theoretical concepts are applied in real life. Their style of presentation is clear and accessible, which makes complex topics more understandable. The book is full of illustrations and diagrams that help to visualize the concepts discussed and make the learning process more exciting. This work will be of particular interest to undergraduate and graduate students studying physics, materials science and electrical engineering. It can also attract the attention of researchers and practitioners working in the development of new technologies related to piezoelectric and ferroelectric materials. The book will be a useful resource for those who seek to deepen their knowledge and expand their horizons in this fascinating field of science. The topics raised in the book go beyond pure physics. The authors raise issues related to the use of piezo- and ferroelectric materials in medicine, ecology and energy. This highlights the importance and relevance of exploring the electrical properties of crystals in today's world, where technology is rapidly evolving and new solutions are becoming necessary to address global challenges. The book “No. 941 Piezo-Segnetoelectrics” not only enriches the reader with knowledge, but also inspires further research and experiments. It can become the basis for scientific works and dissertations, as well as serve as a source of ideas for new projects and developments. If you are looking for literature on the electrical properties of crystals, piezoelectric and ferroelectric materials, then this edition will be an indispensable assistant. It can also be useful for those interested in new technologies and their application in various fields of science and technology. The book of Tagiyev and Blistanov is not just a textbook, but a whole encyclopedia of knowledge that will help you understand complex issues and find answers to many topics of interest to you. Do not miss the opportunity to immerse yourself in the world of electrical properties of crystals and discover new horizons of science!