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| Control of harmful plants (1) |
| Damage to cultivated plants (1) |
| Dégats causés aux plantes cultivées (1) |
| Improved varieties of cereals and vegetables to increase production (1) |
| Lutte contre les plantes nusibles (1) |
| Recherche et contrôle de la Striga (1) |
| Striga research and control (1) |