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SOIL : 325 phrases in 32 subjects |
| Agriculture | 12 |
| Agronomy | 2 |
| American usage, not spelling | 2 |
| Automobiles | 1 |
| Aviation | 1 |
| Chemistry | 1 |
| Construction | 11 |
| Diplomacy | 2 |
| Earth sciences | 4 |
| Ecology | 25 |
| Economics | 4 |
| Environment | 59 |
| Finances | 1 |
| Forestry | 2 |
| General | 129 |
| Geology | 7 |
| Industry | 1 |
| Law | 1 |
| Life sciences | 1 |
| Medical | 4 |
| Metallurgy | 1 |
| Meteorology | 1 |
| Microelectronics | 1 |
| Military | 5 |
| Mining | 1 |
| Natural sciences | 1 |
| Oil and gas | 33 |
| Proverb | 1 |
| Road construction | 1 |
| Soil science | 2 |
| Technology | 7 |
| Transport | 1 |