<P> Systems theory in political science is a highly abstract , partly holistic view of politics , influenced by cybernetics . The adaptation of system theory to political science was first conceived by David Easton in 1953 . </P>
<P> Systems theory in political science is a highly abstract , partly holistic view of politics , influenced by cybernetics . The adaptation of system theory to political science was first conceived by David Easton in 1953 . </P>
who has established the concept of input output model in political system
who has established the concept of input output model in political system
first conceived by David Easton in 1953
first conceived by David Easton in 1953