Columbia subject headings:
Archival materials--Conservation and restoration.
Books--Deacidification.
Library materials--Conservation and restoration.
Harvard subject headings:
Archival materials--Conservation and restoration
Books--Deacidification
Library materials--Conservation and restoration
Paper--Deacidification
Princeton subject headings:
Archival materials--Conservation and restoration.
Books--Deacidification.
Library materials--Conservation and restoration.