Search for: [Subject and Keywords = Betula] OR [Subject and Keywords = history of birch] OR [Subject and Keywords = paleobotany] OR [Subject and Keywords = Betula] OR [Subject and Keywords = brzozy] OR [Subject and Keywords = historia brzozy] OR [Subject and Keywords = paleobotanika] OR [Title = Birch in the Tertiary and Quaternary eras] OR [Title = Brzoza w minionych czasach] OR [Creator = Środoń, Andrzej \(1908–1998\)]