O15 O22 J24 M52
D01; D91; H12; H75; I12; I18
I21, I25, O15
C93, I12, J16, O15
C93, I12, I18, C21
O30 - Innovation; Research and Development; Technological Change; Intellectual Property Rights
D91, I12, O12
I12, D91, I18
C93, D14, G21, I12, I31, O12, Q53
H40, I12, J24, Q50