Two works of Frederic Engels are plugged in this collection - "Анти-Дюринг" and "Natural dialectics"."Анти-Дюринг" became one of fundamental works in soviet philosophy.Consists of three parts: in the first Engels reflects about the rivalry of materialistic philosophy and idealistic, in the second - develops the economic theory of Маркса, and third dedicates to socialism as result of development of society.In Engels set the problem to generalize achievement in area of natural science and to find dialectical laws that manage natural motion of nature "natural dialectics".In the format of a4.pdf is stored publishing layout.