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| Title | Maker | Date Made | |
| 1983 Northern Optical Congress | Northern Optical Congress; UMIST | September 1983 | View |
| Northern Optical Congress - Delegates | Northern Optical Congress; UMIST | 1995 | View |
| Participants | UMIST; Northern Optical Congress | 1990-09-12 | View |
| Southern Optical Congress 1984 | Southern Optical Congress | 1984 | View |