information about Petroleum industry field
Field Hierarchy
| Parent | |||
|---|---|---|---|
Biology 35.7M papers | Engineering 24.7M papers | Geology 9.4M papers | Environmental science 8.1M papers |
Paleontology 5.4M papers | Environmental engineering 976k papers | ||
| Current | |||
Petroleum industry 26.7k papers | |||
| Child | |||
Midstream 1,822 papers | Natural gas industry 1,370 papers | ||
Trends