Columbia subject headings:
Harvard subject headings:
Jāḥiẓ, -868 or 869. Ḥayawān
Jāḥiẓ, -868 or 869--Religion.
Princeton subject headings:
Jāḥiẓ, -868 or 869--Philosophy.
Jāḥiẓ, d. 868 or 9. Ḥayawān.
Science, Medieval.
Zoology--Pre-Linnean works.