生物分解: 46 phrases in 14 subjects |
Agriculture | 9 |
Animal husbandry | 2 |
Bioenergy | 2 |
Biology | 1 |
Desert science | 4 |
Earth sciences | 1 |
Ecology | 2 |
Engineering geology | 1 |
General | 3 |
Oil / petroleum | 1 |
Polymers | 2 |
Reproductive biology | 1 |
Technology | 16 |
Water resources | 1 |