Source: US. Bureau of the Census
Release: Annual Services Survey
For further information, please refer to the US Census Bureau's Annual Services release, online at http://www.census.gov/services/.
US. Bureau of the Census, Total Expense for Research and Development in the Physical, Engineering, and Life Sciences, All Establishments, Employer Firms [EXPEF54171ALLEST], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/EXPEF54171ALLEST, October 23, 2016.