00397pab a2200133 454500008004000000100002000040245009100060260000900151300001200160362000800172650001100180700002500191773004700216180718b2008   xxu||||| |||| 00| 0 eng d  aSimper, Richard  aEvaluating gains from mergers in a non-parametric public good model of police services  c2008  ap.3-33.  aMar  aPolice  aWeyman-Jones, Thomas  aAnnals of Public and Cooperative Economics