A double tubular apparatus, provided with valves and sluices, sucking up and driving back, a system of elementary drainage, simple as the lungs of a man, and which is already in full working order in many communities in England, would suffice to conduct the pure water of the fields into our cities, and to send back to the fields the rich water of the cities
چي؟-چي گفتي؟MIZAN MIZAN