Columbia subject headings:
Soviet Union--Military relations--Sweden.
Submarines (Ships)--Soviet Union.
Sweden--Defenses.
Sweden--Military relations--Soviet Union.
Harvard subject headings:
Soviet Union--Military relations--Sweden.
Submarines (Ships)--Soviet Union
Sweden--Defenses
Sweden--Military relations--Soviet Union.
Princeton subject headings:
Soviet Union--Military relations--Sweden.
Submarines (Ships)--Soviet Union.
Sweden--Defenses.
Sweden--Military relations--Soviet Union.