primary production: 20 phrases in 12 subjects |
Business | 1 |
Economy | 2 |
Energy system | 1 |
Environment | 1 |
Fish farming pisciculture | 1 |
Forestry | 4 |
General | 1 |
Geography | 1 |
Natural resourses and wildlife conservation | 1 |
Oil / petroleum | 4 |
Oil and gas technology | 1 |
Technology | 2 |