Biblio

«OBApproaches Note». .

M. A. McLaughlin, Levy, K., Beck, N. K., Shin, G. - A., Scott, J. S., y Eisenberg, J. N., «An observational study on the effectiveness of point-of-use chlorination», Journal of environmental health, pp. P. 48-53; 4 fig.

Occasional paper / CIDIN. Nijmegen, The Netherlands: Centre for International Development Issues (CIDIN).

Occasional paper / FID. .

Occasional paper / Hong Kong Institute of Asia-Pacific Studies. .

«Occasional paper series / BPD Water and Sanitation». .

Occasional paper series / Development Workshop. Guelph, Ont, Canada: Development Workshop.

Occasional paper series / IRC. .

Occasional paper / Third World Centre. .

Occasional paper / UWEP. Gouda, The Netherlands: WASTE.

Occasional papers / ENDA. .

«Occasional papers / INTRAC». INTRAC, International NGO Training and Research Centre, Oxford, UK.

Occasional papers of the German Development Institute GDI. .

Occasional papers series / Municipal Services Project. .

Occasional publication / PAHO. Washington, DC, USA: Pan American Health Organization (PAHO).

«October 1990», Health action. .

«ODI / Water policy programme briefings». .

ODI/IIMI Agricultural Research and Extension Network (Agren) / network paper. .

ODI/IIMI Irrigation Management Network / network paper. .

OECD documents. .

OECD proceedings. .

«OECD rural policy reviews». .

«OECD Studies on water». OECD, Paris, France.

«Oesterreichische Wasser- und Abfallwirtshaft». Springer Verlag, Vienna, Austria.

Offprint series. .