Columbia subject headings:
Harvard subject headings:
Baader, Ernst Wilhelm, 1892-1962.
Industrial hygienists--Germany--Biography.
Medicine, Industrial--Germany--History--20th century.
National socialism and medicine.
Princeton subject headings:
Baader, Ernst Wilhelm, 1892-1962.
Industrial hygienists--Germany--Biography.
Medicine, Industrial--Germany--History--20th century.
National socialism and medicine.