The preservation challenge : a guide to conserving library materials / by Carolyn Clark Morrow with Gay Walker ; introduction by Pamela W. Darling. Morrow, Carolyn Clark. Walker, Gay. Library materials Conservation and restoration Handbooks, manuals, etc. 025.7 MOR Includes index. Bibliography: p. 217-225. White Plains, NY : Knowledge Industry Publications, c1983. c1983. 1983 Text iv, 231 p. : eng Professional librarian series