Columbia subject headings:
Geochemistry--Washington (State)--Okanogan County.
Geology--Washington (State)--Okanogan County.
Sediments (Geology)--Washington (State)--Okanogan County.
Harvard subject headings:
Princeton subject headings:
Geology--Washington (State)--Okanogan Range.
Sediments (Geology)--Washington (State)--Okanogan Range.