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  1. Aardolie reeds agtduisend jaar gelede deur Rooihuide gebruik | Afrikaanse argeologie, sterre en planete

    […] volledige artikel in die Western Digs kan hier gelees […]

  2. Ancient California Islanders Relied on Drifting...

    […] Eight thousand years ago, as today, one thing you needed to get by in southern California was petroleum. But even then, it seems, you didn't need the top-grade stuff shipped from far away to get th…  […]

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