说明The signing of the Non-Proliferation Treaty by UK "NON-PROLIFERATION TREATY SIGNED. Britain's Foreign Secretary Mr. Michael Stewart (second right seated) signs the non-proliferation treaty at Lancaster House, London, today, July 1, watched by United States Ambassador to London, Mr. David Bruce (right) and Soviet Ambassador to London Mr. Mikhail N. Smirnovsky (second left) seated). At left is Mr.Harold Wilson, Prime Minister of Britain who opened the Treaty Signing"
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