Completely revised from the first edition this is a a basic yet comprehensive overview of the state of preservation in libraries and archives. For those unfamiliar with the issue of preservation, this is an excellent introduction, sketching the background of the problem and touching on the simplest and most effective methods of prevention-such as housekeeping practices, staff training, preservation microfilming, and the creation of a disaster plan. For the experienced, the author provides an enormous bibliography, citing writings by many of the leading authorities in the field