Columbia subject headings:
Bacteriology--Periodicals.
Medical microbiology--Periodicals.
Microbiology--Periodicals.
Parasites--Periodicals.
Parasitology--Periodicals.
Viruses--Periodicals.
Harvard subject headings:
Bacteriology--Periodicals
Medical microbiology--Periodicals
Microbiology--Periodicals
Parasites--Periodicals.
Parasitology--Periodicals
Viruses--Periodicals.
Princeton subject headings:
Bacteriology--Periodicals.
Medical microbiology--Periodicals.
Microbiology--Periodicals.
Parasites--Periodicals.
Parasitology--Periodicals.
Periodicals.
Viruses--Periodicals.