Columbia subject headings:
Amazon River Region--Climate--Congresses.
Biogeochemical cycles--Amazon River Region--Congresses.
Vegetation and climate--Amazon River Region--Congresses.
Harvard subject headings:
Amazon River Region--Climate--Congresses.
Biogeochemical cycles--Amazon River Region--Congresses.
Vegetation and climate--Amazon River Region--Congresses.
Princeton subject headings:
Amazon River Region--Climate--Congresses.
Biogeochemical cycles--Amazon River Region--Congresses.
Vegetation and climate--Amazon River Region--Congresses.