Biblio

M. Simpson-Hebert and Yacoob, M., “Guidelines for designing a hygiene education program in water supply and sanitation for regional/district level personnel”, vol. no. 218. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. i, 58 p.: tab., 1987.

M. Simpson-Hebert, “Hygiene education strategies for region 1 for the Ministry of Public Health in Thailand”, vol. no. 210. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. 50 p.: fig., 1987.