This poster is part of the series of Water, Sanitation and Hygiene posters designed by the Water, Engineering and Development Center of Loughborough University.
SKINNER, B.H. CHATTERTON, K. SHAW, R. (2013): Sealing a borehole with a sanitary seal . Poster. (= WEDC Posters , 5 ). London: Water, Engineering and Development Center (WEDC) URL [Accessed: 28.08.2013] PDF