| |||
exploitation system | |||
operating system | |||
farming system |
sistema de explotacion : 24 phrases in 11 subjects |
Agriculture | 5 |
Animal husbandry | 2 |
Communications | 2 |
Computer networks | 1 |
Economics | 2 |
General | 2 |
Information technology | 3 |
Marketing | 2 |
Politics | 1 |
Soil science | 1 |
Transport | 3 |