id author title date pages extension mime words sentence flesch summary cache txt crln-24009 Smith, Richard D. Mass deacidification: The Wei T’o understanding 2020-02-12 11 .pdf application/pdf 7748 295 57 If for com putational convenience we say the Li­ brary of Congress holds 13,000,000 books, and each book has a replacement cost of $100, the Li­ brary of Congress book collection has a cash value of $1,300,000,000. ervation: The Wei T’o W ay,” C&RL News, De­ cember 1984, and the follow-up articles appearing in the January and March 1985 issues; in Ron Che- pesiuk’s interview, “On Assignment: Preservation: The Wei T ’o W ay,” Wilson Library Bulletin (June 1986); and in “Answers to Frequent Questions Re­ garding the Wei T’o Nonaqueous Book Deacidifi­ cation System,” available from Wei T’o® Associ­ ates.1 The condition of library collections All librarians know th at the condition of books in research library collections is extremely poor. cache/crln-24009.pdf txt/crln-24009.txt