Various methods of studying the structure of soil as also the methods of determining the chemical and physical properties of soil have been presented in the manual. The book has been written by a large number of scientists from the socialist countries (Bulgaria, Hungary, the German Democratic Republic, Poland, Rumania, Czechoslovakia and the Soviet Union), and its intended for theoretical and practical scientists, soil scientists, agronomists, forestry specialists, agrochemists, specialists in land improvement and agrometeorologists.