Columbia subject headings:
Harvard subject headings:
Conservation of natural resources--Arizona--Congresses.
Conservation of natural resources--New Mexico--Congresses.
Ecosystem management--Arizona--Congresses.
Ecosystem management--New Mexico--Congresses.
Wildlife conservation--Arizona--Congresses.
Wildlife conservation--New Mexico--Congresses.
Princeton subject headings:
Ecosystem management--Arizona--Congresses.
Ecosystem management--New Mexico--Congresses.