information about Oil and natural gas field
Field Hierarchy
| Parent | |||
|---|---|---|---|
Biology 36M papers | Chemistry 28.9M papers | Engineering 25M papers | Organic chemistry 12.9M papers |
Ecology 8.1M papers | Waste management 1.6M papers | Fossil fuel 100k papers | |
| Current | |||
Oil and natural gas 1,989 papers | |||
| Child | |||
Trends
Notes
History