has subject area
- Complex Mixtures - Petroleum
- Complex Mixtures - Soil
- Ecological and Environmental Phenomena - Soil
- Energy-Generating Resources - Petroleum
- Environment and Public Health - Biodegradation, Environmental
- Environment and Public Health - Soil
- Environment and Public Health - Soil Microbiology
- Environmental Pollution - Biodegradation, Environmental
- Geological Phenomena - Soil
- Hydrocarbons
- Microbiology - Soil Microbiology
- Soil Pollutants