Complete report of J.J. de Kinder on the Vosmaer system of producing ozone for the purification of water and other purposes: owned by The United Water Improvement Company, Pennsylvania Building, Fifteen and Chestnut Streets, Philadelphia

Complete report of J.J. de Kinder on the Vosmaer system of producing ozone for the purification of water and other purposes: owned by The United Water Improvement Company, Pennsylvania Building, Fifteen and Chestnut Streets, Philadelphia