ISSUES IN DESCRIPTIVE AND SUBJECT CATALOGING OF PHOTOGRAPHS IN DIGITAL COLLECTIONS ON THE EXAMPLE OF THE DIGITAL LIBRARY OF WARSAW UNIVERSITY OF TECHNOLOGY (Polish Title - below)

(Title in Polish - 'Fotografie w zbiorach cyfrowych - problemy z opracowaniem formalnym i rzeczowym na przykladzie Biblioteki Cyfrowej Politechniki Warszawskiej'). In the era of digitization and growing importance of photographs as documents of cultural value it is extremely important to standardize principles of cataloging for such types of documents held by libraries, archives and museums and published in digital libraries. Having analyzed the collection of photographs stored in the Library of the Warsaw University of Technology, the authoresses of the article discuss issues in descriptive and subject cataloging of such documents resulting from the nature of graphic documents (lack of text data and lack of appropriate Polish standards and cataloging principles). New challenges facing the creators of digital libraries have been stressed: openness to new technologies and ideas as well as significant changes in work methods and habits.