https://www.census.gov/programs-surveys/sq-class.html
Business and Professional Classification Survey
Obtains information necessary to identify and classify businesses to update the samples for current business surveys and the Economic Census.
business and professionalclassification survey
https://blog.pensoft.net/category/vegetation-classification-and-survey-vcs/
Vegetation Classification and Survey (VCS) | Blog
vegetationclassificationsurveyvcsblog