Front Matter -- Acknowledgments -- Preface -- Contents -- Tables, Figures, and Boxes -- Executive Summary -- 1 Introduction -- 2 Livestock Agriculture and Animal Feeding Operations -- 3 Air Emissions -- 4 Measuring Emissions -- 5 Approaches for Estimating Emissions -- 6 Government Regulations and Programs -- 7 Improving Knowledge and Practices -- 8 Conclusions -- References -- A Statement of Task -- B Acronyms and Glossary -- C Bioaerosols -- D Nitrogen and Sulfur Contents of Animal Products and Live Animals- Sample Excretion Predictions -- E Animal Units -- F Ammonia Emissions from Manure Storage -- G Regulatory Action Levels by Selected Atmospheric Pollutanta,b -- H Regulatory Action Levels by Regulatory Requirement and Action Statusa,b -- I Emission Factors for a Feed Mill or Grain Elevator -- J Public Meeting Agendas -- K Geographic Distribution of Livestock and Poultry Production in the United States for 1997 -- L Emission Factors in Published Literature -- About the Authors -- Board on Agriculture and Natural Resources Publications.