U.S. Geological Survey - De Facto Employment USGS manual chapter on De Facto Employment USGS - U.S. Geological Surveyhttp://www.usgs.gov/usgs-manual/370/370-3001.html- 7.3KB - USGS
U.S. Geological Survey - Collection of Debts USGS manual chapter on Collection of Debts USGS - U.S. Geological Surveyhttp://www.usgs.gov/usgs-manual/330/338-4.html- 50.0KB - USGS