Columbia subject headings:
Harvard subject headings:
Georg Fischer AG (Schaffhausen, Switzerland)--History.
Iron industry and trade--Switzerland--Schaffhausen--History.
Steel industry and trade--Switzerland--Schaffhausen--History.
Princeton subject headings:
Georg Fischer AG (Schaffhausen, Switzerland)--History.
Iron industry and trade--Switzerland--Schaffhausen--History.
Steel industry and trade--Switzerland--Schaffhausen--History.