Columbia subject headings:
Harvard subject headings:
Geology--Yukon--Periodicals.
Mines and mineral resources--Yukon--Periodicals.
Prospecting--Yukon--Periodicals.
Princeton subject headings:
Geology--Yukon Territory--Periodicals.
Mines and mineral resources--Yukon Territory--Periodicals.
Periodicals.
Prospecting--Yukon Territory--Periodicals.