Note: This only applies to works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision.
2007-04-04 17:57 Mbeychok 290×188×8 (9383 bytes) This drawing was obtained from a [[U.S. EPA]] website at http://www.epa.gov/eogapti1/module5/fans/types/types.htm on April 4, 2007. - ~~~~