Columbia subject headings:
Engineers--Massachusetts--Boston--Case studies.
Industrial sociology--Case studies.
Professional employees--Massachusetts--Boston--Case studies.
Scientists--Massachusetts--Boston--Case studies.
Unemployed--Massachusetts--Boston--Case studies.
Harvard subject headings:
Engineers--Massachusetts--Boston--Case studies.
Industrial sociology--Case studies.
Professional employees--Massachusetts--Boston--Case studies.
Scientists--Massachusetts--Boston--Case studies.
Unemployed--Massachusetts--Boston--Case studies.
Princeton subject headings:
Case studies.
Engineers--Massachusetts--Boston--Cases studies.
Industrial sociology--Case studies.
Professional employees--Massachusetts--Boston--Case studies.
Scientists--Massachusetts--Boston--Case studies.
Unemployed--Massachusetts--Boston--Case studies.