Global resourcesde Helen CothranMateriasEnvironmental aspectsManagementEconomic developmentNatural resourcesConservation of natural resourcesAgricultural conservationSustainable developmentEnergy conservationRain forestsFood supplyFree tradeEnvironmental protectionEdiciones (1)Global resources (2003)Greenhaven Press · inglésMás obras de Helen CothranThe InternetAnimal experimentationThe InternetSexual Violence