Columbia subject headings:
Continental shelf--Pacific Coast (North America)
Excavations (Archaeology)--California--Pacific Coast.
Excavations (Archaeology)--Oregon--Pacific Coast.
Excavations (Archaeology)--Washington (State)--Pacific Coast.
Harvard subject headings:
Princeton subject headings:
Continental shelf--Pacific Coast (U.S.).
Underwater archaeology--California--Pacific Coast.
Underwater archaeology--Oregon--Pacific Coast.
Underwater archaeology--Washington (State)--Pacific Coast.