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Trevor Shackelford
Добавлен 17 апр 2013
Видео
ModAD High Rise Treatment System
Просмотров 91911 лет назад
About 2.5 billion people in developing countries, more than one third of the world population, lack access to basic sanitation facilities (UNICEF/WHO, 2012). As a result, 3.4 million people, mostly children, die every year from diseases contracted through direct and indirect contact with pathogens found in human excreta . The low sanitation coverage in developing countries is primarily due to t...