Source: U.S. Census Bureau
Release: Quarterly Financial Report
Further information related to the Quarterly Financial Report survey can be found at https://www.census.gov/econ/qfr/about.html
Methodology details can be found at https://www.census.gov/econ/qfr/documents/QFR_Methodology.pdf
U.S. Census Bureau, Quarterly Financial Report: U.S. Corporations: Accumulated Depreciation, Depletion, and Amortization: All Professional and Technical Services, Except Legal Services: Scientific Research and Development Services Industry [QFR218547USNO], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/QFR218547USNO, August 17, 2019.