[Observation on the sanitary effect of a 3-vault septic tank toilet for killing flies and preventing diseases].
D000818:Animals; D004175:Diptera; D006801:Humans; D007300:Insect Control / Q000379:methods*; D007411:Intestinal Diseases, Parasitic / Q000517:prevention & control*; D012499:Sanitation; D014038:Toilet Facilities