Columbia subject headings:
Animals--Management--United States--History.
Wildlife conservation--Economic aspects--United States--History.
Wildlife conservation--Law and legislation--United States--History.
Wildlife conservation--United States--History.
Wildlife management--Economic aspects--United States--History.
Wildlife management--Law and legislation--United States--History.
Wildlife management--United States--History.
Harvard subject headings:
Wildlife conservation--Economic aspects--United States--History.
Wildlife conservation--Law and legislation--United States--History.
Wildlife conservation--United States--History.
Wildlife management--Economic aspects--United States--History.
Wildlife management--Law and legislation--United States--History.
Wildlife management--United States--History.
Princeton subject headings:
Wildlife conservation--Economic aspects--United States--History.
Wildlife conservation--Law and legislation--United States--History.
Wildlife conservation--United States--History.
Wildlife management--Economic aspects--United States--History.
Wildlife management--Law and legislation--United States--History.
Wildlife management--United States--History.