A computer simulation of democratic political development: tests of the Lipset and Moore models

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9	February 13, 2020	MARC Bot	remove fake subjects
8	October 25, 2012	ImportBot	Added subject 'In library'
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6	May 18, 2012	EdwardBot	update for books with wrong subjects
5	October 14, 2011	EdwardBot	remove duplicate authors
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3	December 5, 2010	Open Library Bot	Added subjects from MARC records.
2	April 28, 2010	Open Library Bot	Linked existing covers to the work.
1	December 10, 2009	WorkBot	add works page