Total intramural expenditure on R&D performed during a specific reference period, broken down by the fields of research and development. The fields included are: 1. Natural sciences 2. Engineering and technology 3. Medical and health sciences 4. Agricultural and veterinary sciences 5. Social sciences 6. Humanities and the arts.
R&D surveys.
Adapted from OECD (2015), Frascati Manual 2015: Guidelines for Collecting and Reporting Data on Research and Experimental Development.