… Occupation 1968 … 21. 8. 1968 - Invasion of the Warsaw Pact troops …
… 1968, Vienna … 21. 8. 1968 - Invasion of the Warsaw Pact troops …
… August 1968 … 21. 8. 1968 - Invasion of the Warsaw Pact troops …
… August of 1968 … 21. 8. 1968 - Invasion of the Warsaw Pact troops …