Total domestic intramural expenditure on R&D during a given year, broken down by the Fields of science and technology used to classify R&D according to the Revised Fields of Science and Technology Classification. The fields included are:1. Natural sciences;2. Engineering and technology;3. Medical and health sciences;4. Agricultural sciences;5. Social sciences;6. Humanities.
Adapted from OECD (2002), Frascati Manual: Proposed Standard Practice for Surveys on Research and Experimental Development, §423 and OECD (2007), Revised Fields of Science and Technology (FoS) Classification in the Frascati Manual.