Columbia subject headings:
Harvard subject headings:
Czechoslovakia--History--Intervention, 1968--Participation, German--Sources.
Czechoslovakia--History--Intervention, 1968--Sources.
Germany (East)--History, Military--Sources.
Germany (East). Nationale Volksarmee--Sources.
Germany (West)--History, Military--Sources.
Germany (West). Bundeswehr--Sources.
Princeton subject headings:
Czechoslovakia--History--Intervention, 1968--Participation, German--Sources.
Czechoslovakia--History--Intervention, 1968--Sources.
Germany (East)--History, Military--Sources.
Germany (East). Nationale Volksarmee--Sources.
Germany (West)--History, Military--Sources.
Germany (West). Bundeswehr--Sources.