Search for: [Subject and Keywords = Liberak, Marian Adam \(1890\-1931\)] OR [Subject and Keywords = foresters] OR [Subject and Keywords = naturalists] OR [Subject and Keywords = environmental activists] OR [Subject and Keywords = citizen activists] OR [Subject and Keywords = collectors and collecting] OR [Subject and Keywords = journalists] OR [Subject and Keywords = Liberak, Marian Adam \(1890\-1931\)] OR [Subject and Keywords = leśnicy] OR [Subject and Keywords = przyrodnicy] OR [Subject and Keywords = działacze ochrony przyrody] OR [Subject and Keywords = działacze społeczni] OR [Subject and Keywords = kolekcjonerzy i kolekcje] OR [Subject and Keywords = publicyści] OR [Title = Marian Adam Liberak] OR [Title = Marian Adam Liberak] OR [Creator = Schabenbeck, Henryk \(1886–1939\)] OR [Creator = Schabenbeck, Henryk \(1886–1939\)]