Other
The Addiction Counselor Certification : Homepage
Students interested in a career in counseling will find a good overview to the certification requirements for the state of Oregon, along with lots of related information.
US Department of Labor
Bureau of Labor Statistics: Measuring Self Employment in the United States [Pdf]
Article by John E. Bregger, from Monthly Labor Review, January/February 1996. Describes the measurement of self-employment and includes a short analysis of trends in self-employment, covering the period from 1948 to 1996.