00621nas a2200241   4500000000100000008004100001260001700042653003300059653001100092653002000103653001100123653001200134653000900146653001100155653001800166653001100184653003400195100002700229245009100256300001100347490000700358022001400365       1970                            d  c1970 Mar-Apr10aCommunicable Disease Control10aFemale10aHealth Planning10aHumans10aleprosy10aMale10aMexico10aPoliomyelitis10aRabies10aSexually Transmitted Diseases1 aFernández de Castro J00a[Epidemiologic situation of the northern Mexican border and the surveillance program].  a161-820 v12  a0036-3634