Carbon-Nitrogen-Sulfur

ica, I considered myself an old hand: when I started to study the environment of the North Bohemian region in 1963, the ecosystemic changes and health effects result­ ing from extremely high concentrations and deposition of sulfurous and nitrogenous air pollutants and particulate matter could not be ignored. When I returned to the area in 1966 to work there for nearly three years as a consultant i...