 |
| |||
| analytical bibliographic level | |||
| 分析层次: 17 phrases in 11 subjects |
| Aviation | 1 |
| Business | 4 |
| Computers | 1 |
| Earth sciences | 1 |
| Ecology | 1 |
| Economy | 3 |
| Engineering geology | 2 |
| Information technology | 1 |
| Marketing | 1 |
| Technology | 1 |
| Water resources | 1 |
|
| |||
| analytical bibliographic level | |||
| 分析层次: 17 phrases in 11 subjects |
| Aviation | 1 |
| Business | 4 |
| Computers | 1 |
| Earth sciences | 1 |
| Ecology | 1 |
| Economy | 3 |
| Engineering geology | 2 |
| Information technology | 1 |
| Marketing | 1 |
| Technology | 1 |
| Water resources | 1 |