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United States Department of Justice (September 4, 1940). "5 Fed. Reg. 3502"(PDF). United States Department of Justice. Archived(PDF) from the original on May 9, 2017. Retrieved February 25, 2021.
United States Department of Justice (April 4, 1973). "Fed. Reg. 8590"(PDF). United States Department of Justice. Archived(PDF) from the original on December 19, 2020. Retrieved February 25, 2021.
United States Department of Justice (February 25, 1983). "48 Fed. Reg. 8038"(PDF). United States Department of Justice. Archived(PDF) from the original on November 15, 2020. Retrieved February 25, 2021.
United States Department of Justice (November 24, 1987). "52 Fed. Reg. 44971"(PDF). United States Department of Justice. Archived(PDF) from the original on May 9, 2017. Retrieved February 25, 2021.
United States Department of Justice (September 4, 1940). "5 Fed Reg 3502"(PDF). United States Department of Justice. Archived(PDF) from the original on May 9, 2017. Retrieved February 5, 2021.
United States Department of Justice (September 4, 1940). "5 Fed. Reg. 3502"(PDF). United States Department of Justice. Archived(PDF) from the original on May 9, 2017. Retrieved February 25, 2021.
United States Department of Justice (April 4, 1973). "Fed. Reg. 8590"(PDF). United States Department of Justice. Archived(PDF) from the original on December 19, 2020. Retrieved February 25, 2021.
United States Department of Justice (February 25, 1983). "48 Fed. Reg. 8038"(PDF). United States Department of Justice. Archived(PDF) from the original on November 15, 2020. Retrieved February 25, 2021.
United States Department of Justice (November 24, 1987). "52 Fed. Reg. 44971"(PDF). United States Department of Justice. Archived(PDF) from the original on May 9, 2017. Retrieved February 25, 2021.