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The aerobic-anaerobic method of bioremediation was used in Western Siberia on an extreme site of a raised bog polluted with oil 20 years ago. The area was covered with an asphalt crust that can withstand a weight up to 60 kg without being destroyed. The crust was up to 1.5 cm thick; the underlying heavily oil-polluted moss was 15–25 cm. This area was divided into three plots (25 × 30 m2). The concentration...