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| Polytechnic University of Puerto Rico--Graduate students--Posters (20) |
| Polytechnic University of Puerto Rico--Graduate students--Research (20) |
| Six sigma (Quality control standard) (14) |
| Packaging (2) |
| Pharmaceutical industry--Quality control (2) |
| Quality control (2) |
| Aerospace industries (1) |
| Airplanes--Inspection (1) |
| Amine oxidase (1) |
| Electric power systems--Quality control (1) |