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| Polytechnic University of Puerto Rico--Graduate students--Research (2) |
| Wind turbines (2) |
| Renewable energy sources--Standards (1) |
| Wind power (1) |
| Wind turbines--Design and construction (1) |
| Polytechnic University of Puerto Rico--Graduate students--Research (2) |
| Wind turbines (2) |
| Renewable energy sources--Standards (1) |
| Wind power (1) |
| Wind turbines--Design and construction (1) |