Jan Maciejewski

90.03.Z - Artistic creation activities

58.11.Z - Book publishing

58.12.Z - Publishing of directories and registers (e.g. street, phone directory)

58.13.Z - Publishing of newspapers

58.14.Z - Publishing of journals and periodicals

58.19.Z - Other publishing activities

63.12.Z - Web portals

72.20.Z - Research and experimental development on social sciences and humanities

73.20.Z - Market research and public opinion polling

82.11.Z - Office administrative service activities

82.19.Z - Photocopying, document preparation and other specialised office support activities

85.52.Z - Out-of-school forms of cultural education

85.59.A - Teaching of foreign languages

85.59.B - Other out-of-school forms of education, not elsewhere classified

85.60.Z - Educational support activities