Columbia subject headings:
Biology--History.
Botany--History.
Natural history.
Physiology--History.
Zoology--History.
Harvard subject headings:
Biology--History
Botany--History
Natural history--History
Physiology--History
Zoology--History
Princeton subject headings:
Biology--History.
Botany--History.
Natural history--History.
Physiology--History.
Zoology--History.