Preparing for the worst, planning for the best : protecting our cultural heritage from disaster : proceedings of a conference sponsored by the IFLA Preservation and Conservation Section, the IFLA Core Activity for Preservation and Conservation and the Council on Library and Information Resources, Inc., with the Akademie der Wissenschaften and the Staatsbibliothek zu Berlin, Berlin, Germany, July 30 - August 1, 2003 / edited by Johanna G. Wellheiser and Nancy E. Gwinn.