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- Aufsatzsammlung. swd1
- Bestandserhaltung. swd1
- Bibliothek. swd1
- Brittle books[remove]2
- Brittle books United States Case studies1
- Library Materials1
- Library materials Conservation and restoration2
- Library materials Conservation and restoration United States1
- Library materials Selection for preservation2
- Library materials Selection for preservation United States1
- Library materials Selection for preservation United States Case studies1
- Library surveys1
- Preservation microfilming1
- Preservation microfilming United States Case studies1
- Preservation photocopying1
- Preservation photocopying United States Case studies1
- Research libraries Book collections Conservation and restoration1
- Research libraries Book collections Conservation and restoration United States1