J71, J53, J22
C93, D14, H52, I22,
Q41, I30, C93
C93 Field Experiments; I23 Research Institutions; O3 Innovation; Q55 Technological Innovation
Q13, Q18, C93
C83 C93 I31 Q15 Q16 Q54 O12
C93, D83, D91, O12, Q54
D13, I38, J22, J24, I12, I20
C93, D90, Q53
C93, D91