Oil Shale
Schlüsselwörter
oil,
shale,
rock,
fossil,
fuel,
organic,
sedimentary,
energy,
raw,
natural,
black,
brown,
carbon,
geology,
formation,
combustible,
layered,
mineral,
dense,
extracted,
processed,
earth,
deposit,
texture,
hard,
resource,
bitumen,
compact
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