@book{265488,
	author = {U.S. Census Bureau,},
	title = {North American product classification system.},
	publisher = {United States Census Bureau},
	address = {[Washington, D.C.] :},
	edition = {2017 Beta 1.0 version.},
	note = {"NAPCS provides a comprehensive demand/market-oriented classification framework for services and goods. The intent of NAPCS is for use as a shared reference classification throughout the statistical communities of the United States, Canada, and Mexico for collection, tabulation, and analysis of data on the value of products produced by both goods- and services-producing industries and on the prices charged for those products"--Frequently asked questions about NAPCS file.},
	url = {http://purl.fdlp.gov/GPO/gpo74182}
}