Enlace original:
https://apps.who.int/iris/handle/10665/69398
Montgomery, Maggie
,
World Health Organization. Water, Sanitation and Health Team
,
[Sustaining trachoma control and elimination : the basis for environmental indicators in the certification of the elimination of blinding trachoma / Maggie Montgomery, Basis for environmental indicators in the certification of the elimination of blinding trachoma]