21 CFR Part 680 - PART 680—ADDITIONAL STANDARDS FOR MISCELLANEOUS PRODUCTS
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38 FR 32100, Nov. 20, 1973, unless otherwise noted.
For U.S. Customs Service regulations relating to viruses, serums, and toxins, see 19 CFR 12.21–12.23. For U.S. Postal Service regulations relating to the admissibility to the United States mails see parts 124 and 125 of the Domestic Mail Manual, that is incorporated by reference in 39 CFR part 111.