Columbia subject headings:
Harvard subject headings:
Anatomy, Comparative--Encyclopedias.
Dictionaries.
Encyclopedias.
Physiology, Comparative--Encyclopedias.
Zoology--Encyclopedias.
Princeton subject headings:
Anatomy, Comparative--Encyclopedias.
Encyclopedias.
Physiology, Comparative--Encyclopedias.
Zoology--Encyclopedias.