Od zasobu tradycyjnego czasopism do e-zasobu

The paper describes the emergence of the notion of library resources and its subsequent evolution. Original volumes (annual bound volumes) were initially entered by librarians into the traditional card catalogue in the form of hand written cards which were supplemented, in time, with typed cards. With the introduction of library integrated systems, they have been naturally transformed into e-resources. This notion is now one of the most important notions on the professional language of librarians.