Biblio

«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». .

Unicef special report. .

«UNICEF staff working papers». .

«Unicef-Zimbabwe country programme proposal Irish aid to fund Unicef assisted water and sanitation interventions». .

UNIFEM -New York, NY, US, «UNIFEM news». United Nations Development Fund for Women (UNIFEM), New York, NY, USA.

F. R. U. N. E. S. C. O. - Paris, «UNISIST Newsletter». UNESCO, Paris, France.

«United nations conference on environment and development research paper». .

United States Geological Survey water-supply paper. .

«United States Government Accountability Office : report to Congressional Requesters». .

«University of Dar es Salaam, Bureau of Resource Assessment and land Use Planning, research report (new series)». .

«UNW-DPC knowledge publication series». .