Columbia subject headings:
Geology--History.
Lyell, Charles, Sir, 1797-1875.
Harvard subject headings:
Geologists--Great Britain--Biography--Congresses.
Geologists--Great Britain--Biography.
Geology
Geology--Congresses
Geology--History
Lyell, Charles, Sir, 1797-1875
Lyell, Charles, Sir, 1797-1875--Congresses.
Princeton subject headings:
Geology--History.
Lyell, Charles, Sir, 1797-1875.