The U.S. Government maintains current (and past) versions of the Code of Federal Regulations at: http://www.access.gpo.gov/nara/cfr/cfr-table-search.html#page1

The current (April 2007) GMP regulations for drug manufacturing are at: http://www.access.gpo.gov/nara/cfr/waisidx_07/21cfrv4_07.html