M42, C91, O33
I21, O33
O12, O13, Q12
D90, I31, O33, Z13
Q54; Q56; O13; I18
M41 – Accounting O33 – Technological Change: Choices and Consequences; Diffusion Processes L26
Q42, Q48, D83, C93, D72
D91, O33, Z13, C91
H23; H41; Q25; Q53; Q56
R23, O16, I32, O33