[Certain lessons of the mission to the United States in the field of purification and control of potable water].
D004396:Coloring Agents; D060766:Drinking Water; D008921:Religious Missions; D014481:United States; D014881:Water Supply
D004396:Coloring Agents; D060766:Drinking Water
WATER SUPPLY
Quelques enseignements d'une mission aux Etats-Unis en matière d'épuration et de controle des eaux de boisson.