Interest groups in American society [by] L. Harmon Zeigler [and] G. Wayne PeakHarmon Zeigler · First published 1972Open the Tome
Political Organizations in Comparative PerspectiveL. Harmon Zeigler · First published 1990Open the Tome
Lobbying; interaction and influence in American state legislaturesL. Harmon Zeigler · First published 1969Open the Tome
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