Columbia subject headings:
Geology--United States--Guidebooks.
Submarine geology--Guidebooks.
United States--Guidebooks.
Harvard subject headings:
Geology--United States--Guidebooks.
Submarine geology--Guidebooks.
United States--Guidebooks.
Princeton subject headings:
Geology--United States--Guidebooks.
Guidebooks.
Submarine geology--Guidebooks.
United States--Guidebooks.