Columbia subject headings:
Electric power plants--Soviet Union.
Great Britain--Relations--Soviet Union.
Metropolitan-Vickers Electrical Export Company.
Soviet Union--Relations--Great Britain.
Trials (Sabotage)--Soviet Union.
Harvard subject headings:
Great Britain--Foreign relations--Soviet Union.
Metropolitan-Vickers Electrical Export Company--Trials, litigation, etc.
Soviet Union--Foreign relations--Great Britain.
Trials (Espionage)--Soviet Union.
Princeton subject headings:
Great Britain--Foreign relations--Soviet Union.
Metropolitan-Vickers Electrical Export Company--Trials, litigation, etc.
Soviet Union--Foreign relations--Great Britain.
Trials (Espionage)--Soviet Union.