an occurrence of improvement by virtue of preventing loss or injury or other change the preservation and careful management of the environment and of natural resources (physics) the maintenance of a certain quantities unchanged during chemical reactions or physical transformations
Conservation On-Line
A project of the Preservation Department of Stanford University Libraries. A full text library of conservation information, covering a wide spectrum of topics of interest to those involved with the conservation of library, archives and museum materials. http://palimpsest.stanford.edu/