C93 Field Experiments; I23 Research Institutions; O3 Innovation; Q55 Technological Innovation
J16, D90, D91, I23
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
C10, I23, J28, J31, J81, Q50
I25, I26, I31
I21, I24, I25, I26, J16, O15