Columbia subject headings:
Geology--Washington (State)--Pend Oreille County--Maps.
Geology--Washington (State)--Spokane County--Maps.
Geology--Washington (State)--Stevens County--Maps.
Maps.
Harvard subject headings:
Geology--Washington (State)--Pend Oreille County--Maps.
Geology--Washington (State)--Spokane County--Maps.
Geology--Washington (State)--Stevens County--Maps.
Pend Oreille County (Wash.)--Maps.
Spokane County (Wash.)--Maps.
Stevens County (Wash.)--Maps.
Princeton subject headings: