This document contains three papers on conservation which were presented at the 1986 International Federation of Library Associations (IFLA) conference. In "The IFLA Conservation Section and the Core Programme for Preservation (PAC)," David W. G. Clements of the United Kingdom outlines the background of the Core Programme on Preservation and Conservation and summarizes current PAC projects. Appendices include a draft copy of conservation survey methodology, a chart illustrating paper embrittlement from 1850 to 1960 measured by fold test, a model of preservation options, and draft copies of guidelines for the handling of books in general collections and conservation rules for readers. "Preservation/Conservation in Japan" (Akio Yasue, Japan) describes the responses of book publishers and librarians to problems of preservation and conservation. Finally, in "Preservation Problems and the Five-Year Plan," Li Jingren of China discusses preservation problems and activities at the National Library of China, with emphasis on a 5-year preservation plan designed to extend from 1985 to 1989. (KM)