Columbia subject headings:
Archival materials--Digitization.
Digital preservation.
Document imaging systems.
Image processing--Digital techniques.
Library materials--Digitization.
Harvard subject headings:
Archival materials--Digitization
Digital preservation.
Document imaging systems.
Image processing--Digital techniques.
Library materials--Digitization.
Princeton subject headings:
Archival materials--Digitization.
Digital preservation.
Image processing--Digital techniques.
Library materials--Digitization.