The aim of this study is to describe how Swedish research librarians feel that their work has been affected by electronic journals. The study focuses on medical electronic journals accessed through consortia agreements via Bibsam, the Royal Librarys Department for National Co-ordination and Development. This thesis includes two main parts: a literature survey and an empirical study. The literature survey shows that since the 1990´s most research libraries are hybrid libraries including both printed and electronic information sources and that librarians tasks to seek and organize information have remained but the tools have changed. Qualitative interviews were performed with four librarians at two university libraries and one universi...