Columbia subject headings:
Balkan Peninsula--Description and travel.
Balkan Peninsula--History.
Caucasus--Description and travel.
Caucasus--History.
Kaplan, Robert D., 1952---Travel.
Middle East--Description and travel.
Middle East--History.
Harvard subject headings:
Balkan Peninsula--Description and travel.
Balkan Peninsula--History.
Caucasus--Description and travel.
Caucasus--History.
Kaplan, Robert D., 1952---Journeys.
Kaplan, Robert D., 1952---Travel.
Middle East--Description and travel.
Middle East--History.
Princeton subject headings:
Balkan Peninsula--Description and travel.
Balkan Peninsula--History.
Caucasus--Description and travel.
Caucasus--History.
Kaplan, Robert D., 1952---Travel.
Middle East--Description and travel.
Middle East--History.