The presence of deliberately added or adventitious organic and inorganic compounds in soils can cause contamination of the crops which are grown on the land or animals feeding on the land, and, consequently can cause adverse toxic effects on man, animals, birds and insect life. Also, drainage of these substances from the soil by rainwater can cause pollution of adjacent streams, then rivers and, eventually, the oceans. The purpose of this book is to draw together the world-wide literature on the occurrence and analytical determination of all types of organic, organometallic and inorganic compounds in soils, animals, crops, plants, grains, dairy products and processed foods. Animal feed and fertilizers are also discussed.