Columbia subject headings:
Harvard subject headings:
Computer industry--Employees--Health and hygiene--Europe, German-speaking.
Industrial hygiene--Europe, German-speaking.
Information services industry--Employees--Health and hygiene--Europe, German-speaking.
Information technology--Economic aspects--Europe, German-speaking.
Older people--Employment--Health aspects--Europe, German-speaking.
Princeton subject headings:
Computer industry--Employees--Health and hygiene--Europe, German-speaking.
Industrial hygiene--Europe, German-speaking.
Information services industry--Employees--Health and hygiene--Europe, German-speaking.
Information technology--Economic aspects--Europe, German-speaking.
Older people--Employment--Health aspects--Europe, German-speaking.