 |
|
calorific value : 39 phrases in 15 subjects |
| Bioenergy | 1 |
| Chemistry | 3 |
| Coal | 3 |
| Construction | 2 |
| Earth sciences | 1 |
| Energy industry | 1 |
| Environment | 6 |
| General | 2 |
| Medical | 1 |
| Metallurgy | 6 |
| Natural resourses and wildlife conservation | 1 |
| Oil / petroleum | 3 |
| Physical sciences | 5 |
| Technology | 3 |
| Transport | 1 |