10 CFR 73.3 : Energy (§ 1.1 To Parts 1801-1899) — (§ 51.1 To Parts 172-199) — Nuclear Regulatory Commission (Continued) (§ 51.1 To Parts 172-199) — Physical Protection Of Plants And Materials (§ 73.1 To Appendix H To Part 73) — General Provisions (§ 73.1 To § 73.24) — Interpretations.