Columbia subject headings:
Entomologists--United States--Biography.
Fitch, Asa, 1809-1879.
Insects--Classification.
Insects--New York (State)--Classification.
Harvard subject headings:
Entomologists--United States--Biography.
Fitch, Asa, 1809-1879.
Insects--Classification
Insects--New York (State)--Classification.
Princeton subject headings:
Entomologists--Biography.
Entomology.
Fitch, Asa, 1809-1879--Bibliography.
Fitch, Asa, 1809-1879--Biography.