 | Vacuum Freeze-Drying, a Method Used to Salvage Water-Damaged Archival and Library Materials: A RAMP Study with Guidelines (UNESCO, 1987) |
 |  | 1. Introduction |
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| Vacuum Freeze-Drying, a Method Used to Salvage Water-Damaged Archival and Library Materials: A RAMP Study with Guidelines (UNESCO, 1987) |
| | 1. Introduction |
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|
|
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|