Documents on British Policy Overseas: v.1. Britain and the Soviet Union, 1968-1972. v.2. The Conference on Security and Cooperation in Europe, 1972-75. v.3. Détente in Europe, 1972-76. v.4. The year of Europe: America, Europe and the energy crisis, 1972-1974. v.5.The Southern Flank in crisis, 1973-1976. v.6. Berlin in the Cold War, 1948-1990. v.7. German Unification, 1989-1990