PUCPR Search for 'an:92341'

Contaminación y medio ambiente Daniel S. Cicerone.

By Cicerone, Daniel S..
Buenos Aires Eudeba 2007 .
210 p. , Includes index. (Ciencia joven).
9789502314891

GEO year book. an overview of our changing enviroment 2006

Nairobi Produced by Division of Early Warning and Assessment (DEWA), UNEP 2006 .
iv, 82 p. , UNEP job no.: DEW/0773/ NA. | Includes Bibliographical References. | Sales no. not printed. | Available in Arabic, Chinese, English, French, Russian and Spanish at UNEP website (viewed 05 November 2008). 25 cm..

African statistical yearbook. Annuaire statistique pour l'Afrique. 2007 = 2007

Addis Ababa UN, ECA, African Centre for Statistics 2007 .
xxi, 1 v. (various pagings) 9789210251631

Nuestro Planeta La revista del programa de las Naciones Unidas para el Medio Ambiente

Nairobi UNEP Information and Public Affairs 1989 , Available also on the internet | Frequency may change