00347pab a2200121 454500008004000000100002600040245007700066260000900143300001500152362000800167650002600175773002400201180718b2011   xxu||||| |||| 00| 0 eng d  aPerrella, Andrea M.L.  aConditions for efficacious petitions: Empirical evidence from Two cities  c2011  ap.789-812.  aOct  aPublic administration  aPolitics and Policy