Columbia subject headings:
Climatic changes.
Earth sciences--Forecasting.
Hydrology--Research--United States--Congresses.
Harvard subject headings:
Biotechnology--Congresses
Climatic changes
Climatic changes--Congresses
Climatic changes--Congresses.
Earth sciences--Forecasting
Environmental sciences--Forecasting--Congresses.
Hydrology--Research--United States--Congresses.
Princeton subject headings:
Climatic changes.
Earth sciences--Forcasting.
Hydrology--Research--United States--Congresses.