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The Spanish Monopoly of Platina22-31

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Figure

Fig. 1 A the year; study of the number of articles about platina published in scientific periodicals between 1751 and 1820 shows that the total increased exponentially, left-hand scale
Fig 2 In England, again at the forefront bution. properties established. European requirements the period up to 1786 preliminary observations about platina were being made and some for platina were small and a breakdown of the num- ber of papers published according to country of origin shows that France made the largest contri- From 1787 to 1820 applications for platina were being actively sought with France, and of these investigations

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