00420pab a2200145 454500008004000000100001800040245007400058260000900132300001400141362000800155650003400163650003000197650001400227773003300241180718b2009   xxu||||| |||| 00| 0 eng d  aClark, Tom S.  aMeasuring ideological polarization on the United States Supreme Court  c2009  ap.146-57.  aMar  aSupreme Court - United States  aJudiciary - United States  aJudiciary  aPolitical Research Quarterly