Columbia subject headings:
Exotic animals--Government policy--United States.
Pet industry--Government policy--United States.
Wild animal trade--Government Policy--United States.
Harvard subject headings:
Exotic animals--Government policy--United States.
Pet industry--Government policy--United States.
Wild animal trade--Government Policy--United States.
Princeton subject headings:
Exotic animals--Government policy--United States.
Pet industry--Government policy--United States.
Wild animal trade--Government Policy--United States.