In the book the various aspects of agricultural emissions are discussed. Its first part refers mainly to introductory, theoretical, and methodological issues. The second part gives the most recent data on national emissions, particularly these of Nitrogen species in selected individual European countries and the projections of their emission for all Europe. The third part which deals exclusively with ammonia brings comprehensive survey of its emission abatement potentials, the cost of appropriate actions and the difficulties in their practical implementation. It also considers the potential side effects of ammonia emission abatement measures.