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| AGRICULTURAL DEVELOPMENT (1) |
| AGRICULTURAL MECHANIZATION (1) |
| AGRICULTURAL PRODUCTION (1) |
| ARID ZONE (1) |
| CULTIVATION PRACTICES (1) |
| ECONOMIC ASPECTS (1) |
| ECONOMIC INFRASTRUCTURE (1) |
| FARMING SYSTEMS (1) |
| INNOVATION (1) |
| MOTIVATION (1) |
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