16 books, magazines, magazine supplements, catalogues, manuals, brochures, pamphlets, guides and newsletters in the field of global information networks and on-line information services
35 arranging and conducting trade show exhibitions, expositions and conferences in the field of global information networks and on-line information services
42 providing on-line books, magazines, magazine supplements, catalogues, manuals, brochures, pamphlets, guides and newsletters in the field of global information networks and on-line information services