Columbia subject headings:
Harvard subject headings:
Aboukir (Ship)
Cressy (Boat)
Hogue (Ship)
Hogul (Ship)
World War, 1914-1918--Naval operations, German
Princeton subject headings:
Aboukir (Ship)
Cressy (Boat)
Hogul (Ship)
World War, 1914-1918--Naval operations, German.