The Commission's Dissemination of Scientific and Technical Knowledge Unit within DG XIII (Information Technologies and Industries, and Telecommunications) has issued a catalogue of research publications providing bibliographic details of all EUR series reports published during 1991, resulting from Research and Technological Development (RTD) programmes and other studies financed wholly and partly from the budget of the European Communities. These include scientific and technical studies; monographs; proceedings of conferences; workshops and contractors' meetings organized by the Commission; and various reports resulting from research activities. The main section of the catalogue lists the detailed entry for each EUR document, classified by subject headings. The title is given in the original language, followed where appropriate by an English translation, together with the names of the authors and/or responsible editors plus the EUR number, language code, year of publication, number of pages, form of availability of the report and the price in ECU. Indexes of titles, of EUR numbers and of authors are also provided to facilitate searches.