Columbia subject headings:
Microbial populations--Congresses.
Stromatolites--Congresses.
Water--Microbiology--Congresses.
Harvard subject headings:
Marine microbiology--Congresses.
Microbial mats--Congresses.
Microbial populations--Congresses.
Stromatolites--Congresses.
Water--Microbiology--Congresses.
Princeton subject headings:
Microbial populations--Congresses.
Stromatolites--Congresses.
Water--Microbiology--Congresses.