00278nam a2200097Ia 4500080001800000100001700018245008200035260002900117300001600146583001800162  a02.05.02 R875  aRovira, Joan  aEssential package of health benefits : objectives, design, and implementation  bPAHOaWashingtonUSc2002  avii, 114 p.  c7/31/06kJOYD