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distribution par rotation; distribution au tour d'arrosage |
rotation system: 22 phrases in 10 subjects |
Agriculture | 6 |
American usage, not spelling | 1 |
Economy | 1 |
Forestry | 1 |
General | 2 |
Labor law | 2 |
Materials science | 1 |
Politics | 2 |
Statistics | 2 |
Transport | 4 |