How can we get pure water from sea water? How can we get salt from sea water? Harry Armstrong talks about this and does some experiments on ' Dissolving and Evaporating '
Junior Science series
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How can we get pure water from sea water? How can we get salt from sea water? Harry Armstrong talks about this and does some experiments on ' Dissolving and Evaporating '
Junior Science series
BBC Home Service is a radio channel that started transmitting on the 1st September 1939 and ended on the 29th September 1967.
