So Pulkovsky or Grinvechsky?


YuryVorontsov
 
So Pulkovsky or Grinvechsky?
Source
So Pulkovsky or Grinvechsky? - My, Pulkovo Observatory, Pulkovo, Prime meridian, Greenwich, Geography, Seafaring, Тайны
Geography Greenwich Prime meridian Seafaring Pulkovo Pulkovo Observatory Тайны
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