Columbia subject headings:
Anatomy--Periodicals.
Botany--Periodicals.
Geology--Periodicals.
Science.
Zoology--Periodicals.
Harvard subject headings:
Anatomy--Periodicals
Botany--Periodicals
Geology--Periodicals
Science--Periodicals
Zoology--Periodicals
Princeton subject headings:
Anatomy--Periodicals.
Botany--Periodicals.
Geology--Periodicals.
Periodicals.
Science.
Zoology--Periodicals.