Art.1: Aleksander Radwanski
The virtual library - problems in definition

An attempt to definenotions virtual library through the derivative notions such as virtual reality, virtual museum. The author describes the existing examples of such virtual libraries in the Internet

Art.2: Anna Sitarska
Union catalogues - how to build them at the turn of the century

This paper comprises reflections about the future of union catalogues in Poland provoked by the author's stay at the symposium "Library Resource Sharing and Discovery: cataloges for the future" organised by the British Library in March 1999.

Art.3: Andrzej Koziara
The network diffusion of the databases supplied by optical discs

The author discusses the development of the technology of the network diffusion of the data recorded on the optical disc and especially focuses on such undertaking in Polish libraries.

Art.4: Anna Tonakiewicz
The document delivery in a modern scientific library

Description of the organization of the access - through the bibliographic and abstract databases - to full texts od documents, based on experiance of the employee of the Science Information Division in Wasaw Institut of Technology. An appraisal of a few databases tested in the above library.