EduSfera Sylwia Wyszyńska

74.99.Z - All other professional, scientific and technical activities, not elsewhere classified

72.20.Z - Scientific research and development in social sciences and humanities

73.20.Z - Market research and public opinion polling

73.30.B - Other public relations and communications activities

74.91.Z - Patent attorney and marketing activities

85.52.Z - Non-school forms of artistic education

85.59.B - Courses and training for acquiring knowledge, skills, and professional qualifications in non-school forms

85.59.D - Other non-school forms of education, not classified elsewhere

85.69.Z - Educational support activities, not classified elsewhere