This paper has two objectives: first, to identify the main contaminants responsible for high treatment costs in the Umgeni catchment area, and second, to predict treatment costs from observed levels of contaminants. A partial adjustment model of treatment costs is estimated for the DV Harris...

Global biofuel production has risen substantially in recent years, driven primarily by government support for biofuel industries. The stated motivations for these initiatives are numerous and have varied over time. Soybeans are the only field crop produced in sufficient quantities in...

Global biofuel production has risen substantially in recent years, driven primarily bygovernment support for biofuel industries. The stated motivations for these initiatives arenumerous and have varied over time. Soybeans are the only field crop produced in sufficientquantities in KwaZulu-Natal...