Columbia subject headings:
Freyer, Hans, 1887-1969.
Industries--Social aspects.
Marcuse, Herbert, 1898-1979.
Harvard subject headings:
Freyer, Hans, 1887-1969.
Industries--Social aspects
Marcuse, Herbert, 1898-1979
Princeton subject headings:
Freyer, Hans, 1887-1969.
Industries--Social aspects.
Marcuse, Herbert, 1898-1979.