Columbia subject headings:
Agricultural pests--Control--Government policy--United States--Periodicals.
Wildlife Services (U.S.)--Periodicals.
Wildlife pests--Control--Government policy--United States--Periodicals.
Harvard subject headings:
Princeton subject headings:
Agricultural pests--Control--Government policy--United States--Periodicals.
Periodicals.
Wildlife Services (U.S.)--Periodicals.
Wildlife pests--Control--Government policy--United States--Periodicals.