Ploughing by Home-made Explosives. Deep ploughing, one of the key measures of China's revolution in agriculture which has doubled food crops this year, can now be done in a new, labour-saving way. Li...
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Ploughing by Home-made Explosives. Deep ploughing, one of the key measures of China's revolution in agriculture which has doubled food crops this year, can now be done in a new, labour-saving way. Li...