Regulations last checked for updates: Jan 18, 2025

Title 43 - Public Lands: Interior last revised: Jan 16, 2025
Appendix Appendix A - Appendix A to Part 418—Calculation of Efficiency Equation
authority: 43 U.S.C. 391,
source: 62 FR 66467, Dec. 18, 1997, unless otherwise noted.