three-sector model (Q1256893)
economic theory which divides economies into three sectors (primary, secondary, tertiary)
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aliases three-sector hypothesis
 three-sector theory
description economic theory which divides economies into three sectors (primary, secondary, tertiary)

External Links
(P227) 7507432-1
(P646) /m/02r09bx
(P3911) 10521-1
(P6366) 39685635