Piotr Olszewski Software

58.29.Z - Other software publishing

58.11.Z - Book publishing

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

58.13.Z - Publishing of newspapers

58.19.Z - Other publishing activities

58.21.Z - Publishing of computer games

59.11.Z - Motion picture, video and television programme production activities

59.20.Z - Sound recording and music publishing activities

60.10.Z - Radio broadcasting

60.20.Z - Public and licence television programmes broadcasting

62.01.Z - Computer programming activities

62.02.Z - Computer consultancy activities

62.03.Z - Computer facilities management activities

62.09.Z - Other information technology and computer service activities

63.11.Z - Data processing, hosting and related activities

63.12.Z - Web portals

73.11.Z - Advertising agencies activities

73.12.A - Intermediation in the sale of time and place on advertising aims in the radio and television

73.12.B - Intermediation in the sale of the place on advertising aims in printed media

73.12.C - Intermediation in the sale of the place on advertising aims in electronic media (Internet)

73.12.D - Intermediation in the sale of the place on advertising aims in other media

74.90.Z - Other professional, scientific and technical activities not elsewhere classified