A1 - Werla, Marcin A1 - Lewandowska, Agnieszka A1 - Dudczak, Adam L2 - http://lib.psnc.pl/Content/190 ER - T1 - Federated regional and institutional digital libraries in Poland as a part of European data infrastructure UR - http://lib.psnc.pl/dlibra/docmetadata?id=190