These numbers run in sequence and start anew each congressional year. For example, the Medical Device Amendments of 1992 are referred to as Pub L no. Within 2-3 years of enactment, slip laws are compiled by the Government Printing Office into a set of volumes referred to as The United States Statutes at Large. These volumes are arranged in chronological order and contain all public laws followed by private laws, presidential proclamations, reorganization plans, and constitutional amendments. Approximately five additional volumes are produced for each congressional session.
Individual volumes have a subject index.
Citations are by volume and page number. Matters dealing with food, drugs, and medical devices are included in Title 21. Citations are by title and section number. Two annotated sets of the USC are published by private firms that use the same numbering system. The United States Code Annotated is published by West Publishing Company.