Pengarang: Liberska Hanna Liberska

Liberska Hanna Liberska & Farnicka Marzanna Farnicka: Aggression as a Challenge

Liberska Hanna Liberska & Farnicka Marzanna Farnicka: Child of Many Worlds: Focus on the Problem of Ethnic Minorities

Liberska Hanna Liberska & Farnicka Marzanna Farnicka: Aggression as a Challenge

Liberska Hanna Liberska & Farnicka Marzanna Farnicka: Child of Many Worlds: Focus on the Problem of Ethnic Minorities