Search for: [Subject and Keywords = Śniadecki, Jan \(1756\-1830\)] OR [Subject and Keywords = Child rearing \- 19c.] OR [Subject and Keywords = Children care \- 19c. \- informatory] OR [Subject and Keywords = Education \- health and higieny \- 19c. \- informatory] OR [Subject and Keywords = Natural Sciences \- 19c.] OR [Subject and Keywords = Śniadecki, Jan \(1756\-1830\) \- biografia] OR [Subject and Keywords = Dzieci \- pielęgnacja \- 19 w. \- poradniki] OR [Subject and Keywords = Nauki przyrodnicze \- 19 w.] OR [Subject and Keywords = Wychowanie dzieci \- 19 w. \- poradniki] OR [Subject and Keywords = Wychowanie \- zdrowie i higiena \- 19 w. \- poradniki] OR [Title = Dzieła Jędrzeja Śniadeckiego. T. 1] OR [Creator = Śniadecki, Jędrzej \(1768–1838\)]