Columbia subject headings:
Harvard subject headings:
Bacteriology--Early works to 1800.
Leeuwenhoek, Antoni van, 1632-1723--Correspondence.
Microscopes--Early works to 1800.
Microscopy--Early works to 1800.
Natural history--Pre-Linnean works
Physiology--Early works to 1800
Protozoa--Early works to 1800.
Princeton subject headings:
Microscopy--Early works to 1800.
Natural history--Pre-Linnean works.
Physiology--Early works to 1800.