M. Favin, Yacoob, M., en Bendahmane, D.,
“Behavior first : a minimum package of environmental health behaviors to improve child health”, vol. no. 10. Environmental Health Project (EHP), Arlington, VA, USA, p. 58 p. : 9 boxes, 2 fig., 6 tab., 1999.
B. Cave en Curtis, V.,
“Effectiveness of promotional techniques in environmental health”, vol. no. 165. Water and Environmental Health at London and Loughborough (WELL), London, UK, p. 22 p. : 5 boxes, tab., 1999.
B. Ministry o BT,
“The national IEC strategy for reproductive health in Bhutan 1999 - 2002”. Bhutan, Ministry of Health and Education, Department of Health Services, Thimphu, Bhutan, p. 88 p., 1999.
UNICEF -New York, NY, US. Water and Environmental Sanitation Section,
“Report on knowledge, attitude and practices of communities in Nigeria”. UNICEF Water, Environment and Sanitation Section, New York, NY, USA, p. iii, 74 p. : photogr., tabs, 1999.
M. Hanemann,
“Role of pricing in water resources management”. University of California, Department of Agriculture & Resource Economics, Berkeley, CA, USA, p. 23 p. + 23 p. annexes : fig., maps, tab., 1999.
V. Curtis en Kanki, B.,
“Towards better programming : a manual on hygiene promotion”, vol. no. 6. UNICEF Water, Environment and Sanitation Section, New York, NY, USA, p. 82 p. : ill., 1999.
K. M. Bility en Onya, H.,
“Water use, sanitation practices, perceptions and hygiene education in primary school children in the Northern province and Western Cape, South Africa”. Water Research Commission, WRC, Pretoria, South Africa, p. 66 p. : fig., tabs., 1999.