Columbia subject headings:
Harvard subject headings:
Europe--Emigration and immigration--Pictorial works.
Refugees--Europe--Pictorial works.
Refugees--Greece--Pictorial works.
Refugees--Syria--Pictorial works.
Syria--History--Civil War, 2011---Pictorial works.
Princeton subject headings:
Refugees--Greece--Pictorial works.
Refugees--Pictorial works.