Columbia subject headings:
Harvard subject headings:
Electronic newspapers--History--21st century.
Journalism--History--21st century.
Newspaper publishing--History--21st century.
Newspaper reading--History--21st century.
Newsprint industry--History--21st century.
Princeton subject headings:
German newspapers--Technological innovations.
Newspaper publishing--Technological innovations--Germany.
Newspaper reading.
Newsprint industry--Germany.