Columbia subject headings:
B-52 bomber.
Bombers.
Warfare, Conventional.
Harvard subject headings:
B-52 bomber.
Bombers--United States.
Rockwell B-1 (Bomber)
Strategic bombers--United States.
United States. Air Force
Warfare, Conventional.
Princeton subject headings:
B-52 bomber.
Bombers--United States.
Rockwell B-1 (Bomber)
Strategic bombers--United States.
United States. Air Force
Warfare, Conventional.