Search for: [Subject and Keywords = Petrusewicz, Kazimierz \(1906\-1982\)] OR [Subject and Keywords = zoologists] OR [Subject and Keywords = ecologists] OR [Subject and Keywords = academics] OR [Subject and Keywords = biologists \- Poland \- biography] OR [Subject and Keywords = Petrusewicz, Kazimierz \(1906\-1982\)] OR [Subject and Keywords = zoolodzy] OR [Subject and Keywords = ekolodzy] OR [Subject and Keywords = pracownicy naukowi] OR [Subject and Keywords = Biolodzy \-\- Polska \-\- biografie] OR [Title = Kazimierz Petrusewicz] OR [Title = Kazimierz Petrusewicz]