Columbia subject headings:
Harvard subject headings:
War--Pictorial works.
World War, 1914-1918--Belgium--Juvenile literature.
World War, 1914-1918--Belgium--Pictorial works.
World War, 1914-1918--Juvenile literature
World War, 1914-1918--Pictorial works
Princeton subject headings:
Alphabet books.
World War, 1914-1918--Belgium--Pictorial works.
World War, 1914-1918--Pictorial works.