@article{13633,
  keywords = {Adolescent, Adult, Aged, Bacteriological Techniques, Humans, leprosy, Middle Aged, Mycobacterium leprae},
  author = {CONTRERAS RUBIO F},
  title = {[Bacteriologic study of negative cases of leprosy and of normal persons with a new concentration method].},
  year = {1969},
  journal = {Actas dermo-sifiliograficas},
  volume = {60},
  pages = {15-26},
  month = {1969 Jan-Feb},
  issn = {0001-7310},
  language = {spa},
}