Columbia subject headings:
Harvard subject headings:
Horses--Anatomy--Early works to 1800.
Horses--Diseases--Early works to 1800.
Livestock--Diseases--Early works to 1800.
Princeton subject headings:
Horses--Anatomy--Early works to 1800.
Horses--Diseases--Early works to 1800.
Livestock--Diseases--Early works to 1800.