The book "Problems of Information and Retrospective Bibliography of Libraries of the Academy of Sciences of the USSR and Academies of Sciences of the Union Republics" is a unique work collected by a team of authors that immerses the reader in the world of scientific information and library business. This edition will be a real find for anyone interested in the history of science, library science and information technology, as well as for students and specialists in the field of library and information services. The book examines key aspects related to the problems of information and retrospective bibliography, which makes it relevant not only for historians of science, but also for everyone who seeks to understand how scientific libraries were formed and developed in the USSR and the Union republics. The authors raise important questions about the role of libraries in scientific activities, about how they collected, systematized and provided access to information, which is the basis for any scientific research. The book will be especially interesting for those who are fond of the history of science and education, as well as for those who work in the field of library business. Students, graduate students and young scientists will find in it a lot of useful information about how library work was organized in a socialist system, what methods were used to create and maintain library funds, and how access to scientific information was carried out. This publication can be a valuable source for writing term papers and diploma papers, as well as for research. The topics raised in the book cover a wide range of topics, from the history of creating libraries to modern problems related to access to information and its preservation. The authors discuss how approaches to library business have changed over time, what innovations have been introduced into the practice of libraries, and how this has influenced the development of science in the country. The book also addresses current issues, such as the digitalization of library collections and the need for libraries to adapt to the new conditions of the information society. The style of the authors is distinguished by scientific rigor and at the same time the availability of the presentation, which allows the reader to easily absorb the presented material. In their works, there is a deep understanding of the topic and the desire to convey to the reader the importance of libraries as centers of scientific information. This makes the book not only useful, but also fascinating to read. If you are interested in books on library science, information technology or the history of science, the "Problems of information and retrospective bibliography of libraries of the Academy of Sciences of the USSR and academies of sciences of the Union Republics" will be an excellent addition to your library. This publication will not only enrich your knowledge, but also help you better understand how library and scientific information interact in the modern world. Do not miss the opportunity to immerse yourself in the fascinating world of scientific information and library work, opening up new horizons of knowledge with this book. It will be your reliable companion in the study of complex and multifaceted issues related to information and its role in scientific activities.