Krzysztof Dudzik - Psychologia, Sztuka i Edukacja

86.90.E - Other human health activities notelsewhere classified

70.21.Z - Public relations and communication activities

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

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

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

85.60.Z - Educational support activities