1990
M. Q. Patton,
Qualitative evaluation and research methods, 2nd ed.ᵉ éd. Newbury Park, CA, USA: SAGE Publications, 1990, p. 532 p.
N. Tunyavanich et Hewison, K.,
« Rainwater storage in cement jars in northeastern Thailand »,
International journal of water resources development, p. p. 129-136: tab., photogr., 1990.
P. Paramasivam, Ong, K. C. G., Tan, K. H., et Lee, S. L.,
« Rainwater storage using ferrocement tanks in developing countries »,
Journal of ferrocement, p. p. 377-384: fig., tab., 1990.
R. Ballance,
« Rapport sur les activites de la DIEPA dans le domaine du developpement des ressources humaines », vol. no. 3. World Health Organization, Community Water Supply & Sanitation Unit, Geneva, Switzerland, p. 18 p.: photogr., 1990.
WHO -Geneva, CH, World Health Organization, UNDP -New York, NY, US, Geneva, C. H. I. D. W. S. S. D. Ste, et IRC International Water and Sanitation Centre, The Hague, NL,
« Rapport sur les echanges d'information technique dans le cadre de la DIEPA », vol. no. 4. World Health Organization, Community Water Supply & Sanitation Unit, Geneva, Switzerland, p. 27 p., 1990.
J. Millican,
« Reading, writing and cultivating : the role of literacy in irrigation », vol. no. 90/2c. Overseas Development Institute (ODI), London, UK, p. 18 p., 1990.
J. A. Goodrich, Bouwer, H., David, R., et Pyne, G.,
« Recharging ground water »,
Water resources journal, p. p. 7-9: fig., 1990.
A. Wyatt,
« A re-examination of costs and benefits of rural water supply projects in Central Tunisia », vol. no. 298. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. viii, 78 p.: fig., tab., 1990.
PAHO -Washington, DC, US,
« Regional conference on water supply and sanitation : evaluation of the International Drinking Water Supply and Sanitation Decade and projections towards the year 2000, Puerto Rico, 4-6 September de 1990 ». Pan American Health Organization (PAHO), Washington, DC, USA, p. 11 papers, 1990.
M. Y. P. E. P. A. S. - Kua Lumpur,
« Regional workshop on municipal solid waste management : report ». Western Pacific Regional Centre for the Promotion of Environmental Planning and, Kuala Lumpur, Malaysia, p. 26 p., 1990.