Biblio

«UN ariete hidraulico para el pueblo». .

United Nations Departement of Public Information -New York, NY, US, «UN chronicle». United Nations Department of Public Information, New York, NY, USA.

«UNCHS (Habitat) Settlement Infrastructure & Environment Programme waste & wastewater management paper». UN-Habitat, United Nations Centre for Human Settlements, Nairobi, Kenya.

UNCRD Meeting Report Series. .

J. P. U. N. C. R. D. - Nagoya, «UNCRD newsletter». United Nations Centre for Regional Development, Nagoya, Japan.

K. Probst, Hagmann, J., Fernandez, M., e Ashby, J., «Understanding participatory research in the context of natural resource management - paradigms, approaches and typologies», vol No. 130. Overseas Development Institute, Agricultural Research & Extension Network, London, UK, p 15 p. : 2 box., 1 tab.

Understanding technology series. .

UNDP Interregional Project INT/81/047. .

«UNDP Water Governance Facility at SIWI Issue Series». .

UNDP-PPPUE -Johannesburg, ZA, Public Private Partnerships for the Urban Environment, «UNDP-PPPUE newsletter». UNDP, Public Private Partnerships for the Urban Environment (PPPUE), Johannesburg, South Africa.

«UNEP environment library». .

UNEP Environmental Management Guidelines. .

UNEP-WCMC biodiversity series. Cambridge, UK: UNEP World Conservation Monitoring Centre.

«Unesco sources». UNESCO, Paris, France.

«UNESCO working series SC». .

IHE -Delft, NL, International Institute for Infrastructural, Hydraulic and Environmental Engineering, «UNESCO-IHE alumni e-newsletter». IHE (International Institute for Infrastructural, Hydraulic and Environmental Engineering), Delft, The Netherlands.

«Unicef 50 anos : Colombia». .

T. H. U. N. I. C. E. F. Eas Bangkok, «UNICEF EAPRO WASH in schools monitoring package». UNICEF East Asia and Pacific Regional Office, Bangkok, Thailand, p 24 p.

N. L. Netherland Hague, «UNICEF e-mail nieuwsbrief». UNICEF Nederlands Comite, The Hague, The Netherlands.

UNICEF -New York, NY, US, «UNICEF e-newsletter». UNICEF, New York, NY, USA.

UNICEF - Guyana working paper series. .

UNICEF history series, monograph. .

UNICEF Occasional Papers Series. .

UNICEF policy reviews. .

«UNICEF promotion of sanitation». .