O13, Q12, Q16, C93, D83.
Q12, Q15, Q51,Q53, Q56
O12, O13, Q12, D22, M13, C81, C83, C93, D50
J12, J15, J16
I3, J1, O12
J24, J62, J64
O12, O14, M31, L26
K4, J24, I3
O12; O16; G52; H53
Q12 (Micro Analysis of Farm Firms, Farm Households, and Farm Input Markets), Q16 (R&D, Agricultural