The Standard Industrial Classification (SIC) codes classify establishments by the type of business in which they are primarily engaged. A list of the SIC codes can be found here
; they are also found in the Standard Industrial Classification Manual
. This manual classifies a variety of economic activities. The contents are organized into eleven divisions: agriculture, mining, construction, manufacturing, transportation/public utilities, wholesale trade, retail trade, finance/insurance/real estate, services, public administration, and nonclassifiable establishments. Each division is subdivided into major groups, with a more detailed description of the activity.