Biblio

D. de Jong, «Why sanitation is not a popular subject», in [Third Meeting of the Water Supply and Sanitation Collaborative Council Working Group on Promotion of Sanitation : 28 April - 3 May 1995, Geneva, Switzerland : papers], 1995, p. 14 p.

D. de Jong, da Cunha, G., y Heidrick, G., «Mission to Guinea Bissau on behavioural change in water supply and sanitation, 7-13 May 1994 : draft summary report». IRC, The Hague, The Netherlands, p. 25 p.: 2 fig., 1994.

D. de Jong, Ling, J., y Gorre-Dale, E., «Communication in water supply and sanitation : resource booklet». WSSCC Core Group on Information, Education and Communication in WSS, The Hague, The Netherlands, p. 58 p., 1993.

D. de Jong y Parker, J. S., «Development of information, education and communication (IEC) activities in water supply and sanitation in Guinea Bissau : report on a preliminary study». IRC, The Hague, The Netherlands, p. iv, 64 p. + annexes (8 p.), 1993.

D. de Jong, «Health, drinking-water quality and quality improvement : a critical research on drinking-water quality in NW Cameroon». 1983.