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.
Socio-Economic Units, Kerala -Trivandrum, IN,
“Strategy for sanitation programme”. Kerala Water Authority, Socio-Economic Units, Trivandrum, India, p. 12 p. : 4 boxes, 1992.