Title: Zi ran de she ji
Description: Ben shu yi sheng wu ji shu zheng ce wei qie ru dian,Tong guo zhuan ji yin sheng wu shen shen shi fang,Zhuan ji yin shi pin feng xian ping gu deng an li,Bi jiao le ying guo,De guo,Mei guo yi ji ou meng de ke xue ji shu zheng ce ji qi zhi ding guo cheng de yi tong,Fen xi le ge guo,Ge di qu jin xing sheng wu ji shu chan pin ping gu yi ji que ren sheng wu ji shu chan pin an quan xing de fang shi.
Subjects: Ke xue ji shu, Guan xi, Zheng zhi xue, Yan jiu