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 Date: 2013-11-01 16:18:39Nitrogen metabolism Functional groups Nitrates Potassium nitrate Gunpowder Nitrogen Urea Niter Saltpeter Chemistry Matter Fertilizers |
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Date: 2013-11-01 16:18:39Nitrogen metabolism Functional groups Nitrates Potassium nitrate Gunpowder Nitrogen Urea Niter Saltpeter Chemistry Matter Fertilizers |
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Medieval Gunpowder Research Group Making Saltpetre Report Number 11 – September 2013