Columbia subject headings:
Harvard subject headings:
Paper industry--Switzerland--Grellingen--History.
Paper industry--Switzerland--Laufen--History.
Papermaking--Switzerland--Grellingen--Pictorial works.
Ziegler Papier AG (Grellingen, Switzerland)--History.
Princeton subject headings:
Paper industry--Switzerland--Grellingen--History.
Paper industry--Switzerland--Laufen--History.
Papermaking--Switzerland--Grellingen--Pictorial works.
Ziegler Papier AG--History.