00569nas a2200217   4500000000100000008004100001260001700042653001500059653001000074653000900084653003100093653001100124653001200135653001600147653002500163100002200188245011000210300001000320490000700330022001400337       1969                            d  c1969 Jan-Feb10aAdolescent10aAdult10aAged10aBacteriological Techniques10aHumans10aleprosy10aMiddle Aged10aMycobacterium leprae1 aCONTRERAS RUBIO F00a[Bacteriologic study of negative cases of leprosy and of normal persons with a new concentration method].  a15-260 v60  a0001-7310