To locate the regulations currently in force for your topic, start your research in the Code of Federal Regulations (located on the first floor at shelf 9; KF70 .A), which provides a subject arrangement of all regulations in effect for the current year. Use the official index published with the current year's C.F.R., or West's detailed index to the C.F.R., to identify where regulations on your topic are located.
If you have a citation to a statutory code section for your topic, locate the full text of the section in an annotated code and see if references to relevant regulations are provided in the editorial enhancements following the statutory text.