Text ( visual ) : unmediated Preservation of historical records / Committee on Preservation of Historical Records, National Materials Advisory Board, Commission on Engineering and Technical Systems, National Research Council. -- Washington, D.C. : National Academy Press , 1986. -- xvii, 108 p. : ill. ; 27 cm. -- Includes bibliographies and index. -- ISBN 030903681X ; (BA11242140) ; https://ci.nii.ac.jp/ncid/BA11242140 Author Heading(s): National Research Council (U.S.). Committee on Preservation of Historical Records ; National Research Council (U.S.). National Materials Advisory Board. -- Classification(s): LCC : Z110.C7 ; DC19 : 025.7. -- Subject Heading(s): LCSH : Manuscripts -- Conservation and restoration ; LCSH : Archival materials -- Conservation and restoration ; LCSH : History -- Sources -- Conservation and restoration

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