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1by Heindel, Richard H.Get access
Published in The ANNALS of the American Academy of Political and Social Science (1960)
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4by Nash, Gerald D.Get access
Published in The ANNALS of the American Academy of Political and Social Science (1960)
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5by Ruff, George E.Get access
Published in The ANNALS of the American Academy of Political and Social Science (1970)
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