Biblio

M. Sorensson, “Teaching by example : promoting hygiene education and sanitation in primary schools”, Waterlines, an international journal of water, sanitation and waste, pp. p. 23-25: 3 photogr., 1995.

M. Sorensson, “School hygiene education and sanitation in 22 primary schools in Madras, India”. University of Utrecht, Faculty of Social Sciences, Utrecht, The Netherlands, p. 70, 89 p.: ill., map, photogr., 1992.