Columbia subject headings:
Endangered species--Colorado River Watershed (Colo.-Mexico)
Fishery management--Colorado River Watershed (Colo.-Mexico)
United States. Bureau of Reclamation--Appropriations and expenditures.
Harvard subject headings:
Endangered species--Colorado River Watershed (Colo.-Mexico)
Fishery management--Colorado River Watershed (Colo.-Mexico)
United States. Bureau of Reclamation--Appropriations and expenditures.
Princeton subject headings: