Columbia subject headings:
Harvard subject headings:
Endangered species--Law and legislation--Texas.
Endangered species--Law and legislation--United States
Habitat conservation--Economic aspects--Texas.
Habitat conservation--Law and legislation--United States.
Nature conservation--Law and legislation--Texas.
Nature conservation--Law and legislation--United States.
Princeton subject headings:
Endangered species--Law and legislation--United States.
Habitat conservation--Economic aspects--Texas.
Habitat conservation--Law and legislation--United States.
Nature conservation--Law and legislation--United States.