1st International Polar Year Ursus Maritimus Mini Sov. Sheet MNH Comoros Sport Souvenir Sheet Mint NH Rail Transport First Steam Train

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1st International Polar Year Ursus Maritimus Mini Sov. Sheet MNH Comoros Sport Souvenir Sheet Mint NH Rail Transport First Steam TrainMozambique 1st International Polar Year Ursus Maritimus Mini Sov. Sheet MNH The International Polar Years (IPY) are collaborative, international efforts with intensive research foci on the polar regions. Karl Weyprecht, an Austro Hungarian naval officer, motivated the endeavor in 1875, but died before it first occurred in 18821883. Fifty years later (19321933) a second IPY took place. The International Geophysical Year was inspired by the IPY and was