Search for: ([Subject and Keywords = Animals \- freshwater sponges \(Spongillidae\)] OR [Subject and Keywords = Animals \- freshwater sponges \(Spongillidae\) \- development] OR [Subject and Keywords = Animals \- freshwater sponges \(Spongillidae\) \- gemmulas \- archaocytes \- statocytes \- embryos \- osculum] OR [Subject and Keywords = Zwierzęta \- gąbki słodkowodne \(Spongillidae\)] OR [Subject and Keywords = Zwierzęta \- gąbki słodkowodne \(Spongillidae\) \- rozwój] OR [Subject and Keywords = Zwierzęta \- gąbki słodkowodne \(Spongillidae\) \- pąki \- gemmule \- archaocyty \- statocyty \- zarodki \- osculum] OR [Title = Beobachtungen uber die entwicklung der gemmulae der spongilliden und des schwammes aus den gemmulis] OR [Creator = Wierzejski, Antoni \(1843–1916\)])