Columbia subject headings:
Black Mountains North Wilderness (Ariz.)
Burns Spring Wilderness (Ariz.)
Mines and mineral resources--Arizona--Black Mountains North Wilderness.
Mines and mineral resources--Arizona--Burns Spring Wilderness.
Harvard subject headings:
Black Mountains North Wilderness (Ariz.)
Burns Spring Wilderness (Ariz.)
Mines and mineral resources--Arizona--Black Mountains North Wilderness.
Mines and mineral resources--Arizona--Burns Spring Wilderness.
Princeton subject headings: