Açıklama
Presents the story of water-supply in the American community. Explains both the sources of water, including the hydrological cycle and the techniques of water treatment. Discusses the causes of water-supply crises and illustrates experiments for meeting shortages. Concludes with suggestions as to what the average citizen can do to assure an abundant supply of safe water in the years ahead. Includes animation and photography.
Nasıl açılır?
Ürünü indirmek ya da uygulama içinde okumak için Shopy 101 uygulamasını kullan. Kitaplığına eklediğin her şey tüm cihazlarında aynı kalır.