выход на поверхность
• The (surface) exposure of strata of Palaeozoic age ...
• Outcrops (or Outcroppings) of bituminous sand ...
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Русско-английский научно-технический словарь
на Gufo.me
• The (surface) exposure of strata of Palaeozoic age ...
• Outcrops (or Outcroppings) of bituminous sand ...