Columbia subject headings:
Mediterranean Sea--Description and travel.
Harvard subject headings:
Madeira (Madeira Islands)--Description and travel.
Mediterranean Sea--Description and travel.
Physicians--Travel.
Tenerife (Canary Islands)--Description and travel.
Wilde, W. R. (William Robert), 1815-1876--Travel--Mediterranean Sea.
Princeton subject headings:
Mediterranean Sea--Description and travel.