11. Campagne nationale d'hygiène et d'assainissement: rendons le Cameroun propre = National Campaign on Hygiene and Sanitation : keep Cameroon clean Publication: Cameroon : Ministère de la santé publique, [19--] Subject(s): Disease Transmission, Infectious -- prevention & controlInsect ControlToilet FacilitiesWaste ManagementWater SupplyCameroon
12. [Squat toilet and drainage pipe] Publication: [Mysore State, India?] : Bureau of Health Education, [19--] Subject(s): Toilet FacilitiesWaste Management
13. LASF: una letrina para la familia Publication: [Guatemala? : CCM Guatemala, 19--] Subject(s): Toilet FacilitiesWaste Management