World resources 1992-93de World Resources InstituteMateriasNatural resourcesWILDLIFE CONSERVATIONEnvironmental aspectsNEWLY INDUSTRIALIZED COUNTRIESRESOURCES CONSERVATIONFOREST RESOURCESENVIRONMENTAL POLICYEconomic policyDEVELOPED COUNTRIESPOPULATIONENERGY RESOURCESSUSTAINABLE DEVELOPMENTEdiciones (1)World resources. (1992)Oxford University Press · inglésMás obras de World Resources InstituteThe 1993 information please environmental almanacPlants at the pumpOzone protection in the United States