I20, J13, O15, Z11
I22,I23,J61
C93 Field Experiments; I23 Research Institutions; O3 Innovation; Q55 Technological Innovation
I22
J12, J15, J61, O15
C93, D64, H41, I18
C93, I10
J24, J28, J30, J31, J33, J38, I24, I26, I28, I38
I25, I15, Q18, D13, C93
D13, D90, C93, O12