2019 CFR > Title 28 > Chapter I > Part 12 – Registration of Certain Persons Having Knowledge of Foreign Espionage, Counterespionage, or Sabotage Matters Under the Act of August 1, 1956

2016 CFR > Title 28 > Chapter I > Part 12 – Registration of Certain Persons Having Knowledge of Foreign Espionage, Counterespionage, or Sabotage Matters Under the Act of August 1, 1956

2015 CFR > Title 28 > Chapter I > Part 12 – Registration of Certain Persons Having Knowledge of Foreign Espionage, Counterespionage, or Sabotage Matters Under the Act of August 1, 1956

2014 CFR > Title 28 > Chapter I > Part 12 – Registration of Certain Persons Having Knowledge of Foreign Espionage, Counterespionage, or Sabotage Matters Under the Act of August 1, 1956

2010 CFR Title 28 > Chapter I > Part 12 – Registration of certain persons having knowledge of foreign espionage, counterespionage, or sabotage matters under the Act of August 1, 1956

2009 CFR > Title 28 > Chapter I > Part 12 – Registration of certain persons having knowledge of foreign espionage, counterespionage, or sabotage matters under the Act of August 1, 1956