Illinois Natural History Survey

Illinois Natural History Survey is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Engineers Surveyors
• Surveys Industrial

North American Industry Classification System (NAICS) Categories:

• Engineering Services > Engineers Agricultural & Geological > Engineers Surveyors
• Geophysical Surveying And Mapping Services > Surveying Services, By Subject > Surveyors Industrial

Standard Industry Classification (SIC) Categories:

• Engineering Services > Engineers Agricultural & Geological > Engineers Surveyors
• Surveying Services > Surveying Services, By Subject > Surveyors Industrial