Columbia subject headings:
Geology--Great Smoky Mountains National Park (N.C. and Tenn.)--Guidebooks.
Great Smoky Mountains National Park (N.C. and Tenn.)--Guidebooks.
Harvard subject headings:
Geology--Great Smoky Mountains National Park (N.C. and Tenn.)--Guidebooks.
Great Smoky Mountains National Park (N.C. and Tenn.)--Guidebooks.
Guidebooks
Princeton subject headings:
Geology--Great Smoky Mountains National Park (N.C. and Tenn.)--Guidebooks.
Great Smoky Mountains National Park (N.C. and Tenn.)--Guidebooks.