Mikołaj Adamczyk - Ichtiologia i Ochrona wód

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

03.12.Z - Freshwater fishing

03.22.Z - Freshwater aquaculture

58.11.Z - Book publishing

58.14.Z - Publishing of journals and periodicals

58.19.Z - Other publishing activities

63.91.Z - News agency activities

63.99.Z - Other information service activities not elsewhere classified

70.21.Z - Public relations and communication activities

70.22.Z - Business and other management consultancy activities

71.11.Z - Architectural activities

71.12.Z - Engineering activities and related technical consultancy

71.20.A - Food quality testing and analysis

71.20.B - Other technical testing and analysis

72.11.Z - Research and experimental development on biotechnology

72.19.Z - Other research and experimental development on natural sciences and engineering

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

73.20.Z - Market research and public opinion polling

74.20.Z - Photographic activities

74.30.Z - Translation and interpretation activities

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

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

85.60.Z - Educational support activities

90.03.Z - Artistic creation activities

93.19.Z - Other sports activities