Library and information holdings of the Russia National Public Library for Science and Technology: Principles of formation

Library collection development principles have been changing due to intensive introduction of digital resources. The authors examine the processes of library and information development and acquisition of printed and digital resources at of RNPLS&T which adds new possibilities for user information services. The increasing role of digital resources is determined by the appropriate services advancement. The use of licensed full-text digital resources is also discussed. The role of mandatory copy as a powerful, reliable and free source of collection development with domestic printed documents is revealed. The collection is also growing due to the remote access to national digital resources, and among them Russian State Library's Theses Library holds a particular place. The high rank and importance of the centralized/national subscription are emphasized: RNPLS&T provides access to the leading foreign information resources. The significance of open resources for users information support is demonstrated. The main task in the collection development strategy is seen as balancing various types of documents and providing the possibly complete information demanded by users.