Comparative library science as an independent branch of library science

The article deals with the development and development of the theory and methodology of comparative library science. The scientific activity of the famous Russian specialist, doctor of pedagogical sciences, professor Nikolai Semenovich Kartashov is presented. The main direction of his research is identified - a comparative analysis of the state and trends of the development of librarianship in different countries and regions. The role of the textbook NS is shown. Kartashova in the structure of library and information education.