O12; O16; G52; H53
(Technological Change: Choices and Consequences; Diffusion Processes), D91 (Micro-Based Behavioral
L83, Z31, D91, D12, D35
C93, I21, I25, J13, O12, O15
C91, D91, Z13
J71, D91, C90
O12, O13, O15, Q01
O15, O12, I15, J13, J24
I25, O15, O33
J24, J61, J64, I26, O15, D82.