Son Young-il: Jeonggyeongcheonbeop 1: Age of Natural Forces
The theory, The World Book Encyclopedia, which explains the eternal principles of political and economic society for intelligent people, is a collection of five volumes that deals with how the earth has changed through the course of its development from the beginning of the universe to the birth of man. The first reason we deal with the Age of Natural Forces in First World is that the environment before human society was born would have had a critical effect on human society. Not to mention that there would be a natural environment in which humans could live, as a bird could fly in the forest, and a fish would find water. If it were not for plants and animals that humans could eat in nature before the birth of human beings, we would never have been born without food.
Korean title: 정경천법 1: 자연력 시대
Korean author: 손영일
Korean publisher: 지식공감
ISBN-13: 9791156227984
