ISSN INTERNATIONAL STANDARD SERIAL NUMBER

Compilation of data into computer databases in the field of business directories and advertising; systematization of information in computer databases

publication of texts other than advertising texts; publication of electronic books and journals on-line

Quality control for the purpose of certification; testing, analysis, and evaluation of published data, books, magazines, advertising brochures, periodicals, on all types of media, including on electronic media, for the purpose of certification