Columbia subject headings:
Harvard subject headings:
Amazon River Valley.
Careiro (Brazil)
Human ecology--Brazil--Careiro da Várzea Region.
Hydrology--Brazil--Careiro.
Streamflow--Brazil--Careiro da Várzea Region.
Princeton subject headings:
Alluvial plains--Amazon River Region.
Amazon River Region--Environmental conditions.
Hydrology--Amazon River Region.