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| Optical devices | |
|---|---|
| Broader Terms | Equipment_(309) |
| Narrower Terms | Binoculars_(2), Eyeglasses_(2), Hand_lenses_(1), Telescopes_(7) |
| Related Terms | Scientific_equipment_(8) |
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| Optical devices | |
|---|---|
| Broader Terms | Equipment_(309) |
| Narrower Terms | Binoculars_(2), Eyeglasses_(2), Hand_lenses_(1), Telescopes_(7) |
| Related Terms | Scientific_equipment_(8) |