BBC4 年
Significant inventions from the Victorian era
An introduction to some significant inventions from the Victorian era. Adam Hart-Davis explains how the discovery that a bitter tree bark could protect against malaria lead to the invention of ...
BBC4 年
Significant inventions from the Victorian era
An introduction to some significant inventions from the Victorian era. Adam Hart-Davis explains how the discovery that a bitter tree bark could protect against malaria lead to the invention of ...