1. Animal Welfare; Draft Policy on Environment Enhancement for Nonhuman Primates, 64 Fed. Reg. 38145–50 (July 15, 1999).
2. Final Rule: Animal Welfare; Definition of Terms, 54 Fed. Reg. 36112–63 (August 31, 1989) (codified at 9 C.F.R. pts. 1 & 2).
3. Final Rule: Animal Welfare; Standards; Part 3, 55 Fed. Reg. 6426–505 (Feb. 15, 1991) (codified at 9 C.F.R. pt. 3).